対話式シェルとして¶

 $ guestfish

guestfish へようこそ。仮想マシンのファイルシステムを 編集するためのゲスト・ファイルシステム・シェルです。
入力: コマンド一覧の表示は 'help'
マニュアルの参照は 'man'
シェルの終了は 'quit'

 ><fs> add-ro disk.img
 ><fs> run
 ><fs> list-filesystems
 /dev/sda1: ext4
 /dev/vg_guest/lv_root: ext4
 /dev/vg_guest/lv_swap: swap
 ><fs> mount /dev/vg_guest/lv_root /
 ><fs> cat /etc/fstab
 # /etc/fstab
 # Created by anaconda
 [...]
 ><fs> exit

シェルスクリプトから¶

Create a new /etc/motd file in a guest or disk image:

 guestfish <<_EOF_
 add disk.img
 run
 mount /dev/vg_guest/lv_root /
 write /etc/motd "Welcome, new users"
 _EOF_

ディスクイメージにある LVM 論理ボリュームを一覧表示します:

 guestfish -a disk.img --ro <<_EOF_
 run
 lvs
 _EOF_

ディスクイメージにあるファイルシステムをすべて一覧表示します:

 guestfish -a disk.img --ro <<_EOF_
 run
 list-filesystems
 _EOF_

コマンドライン 1 行において¶

Update /etc/resolv.conf in a guest:

 guestfish \
   add disk.img : run : mount /dev/vg_guest/lv_root / : \
   write /etc/resolv.conf "nameserver 1.2.3.4"

Edit /boot/grub/grub.conf interactively:

 guestfish --rw --add disk.img \
   --mount /dev/vg_guest/lv_root \
   --mount /dev/sda1:/boot \
   edit /boot/grub/grub.conf

ディスクを自動的にマウントします¶

仮想マシンからディスクを自動的にマウントするには -i オプションを使用します:

 guestfish --ro -a disk.img -i cat /etc/group
 guestfish --ro -d libvirt-domain -i cat /etc/group

Another way to edit /boot/grub/grub.conf interactively is:

 guestfish --rw -a disk.img -i edit /boot/grub/grub.conf

スクリプトのインタープリターとして¶

ext2 フォーマット済みパーティションを含む 100MB ディスクを作成します:

 #!/usr/bin/guestfish -f
 sparse test1.img 100M
 run
 part-disk /dev/sda mbr
 mkfs ext2 /dev/sda1

準備済みディスクを用いた起動¶

Create a 1G disk called test1.img containing a single ext2-formatted partition:

 guestfish -N fs

利用可能なものを一覧表示する方法:

 guestfish -N help | less

リモートドライブ¶

SSH を使用してリモートディスクにアクセスします:

 guestfish -a ssh://example.com/path/to/disk.img

リモート制御¶

 eval "`guestfish --listen`"
 guestfish --remote add-ro disk.img
 guestfish --remote run
 guestfish --remote lvs

ESCAPE SEQUENCES IN DOUBLE QUOTED ARGUMENTS¶

In double-quoted arguments (only) use backslash to insert special characters:

"\a"

アラート（ベル）文字。

"\b"

バックスペース文字。

"\f"

フォームフィード文字。

"\n"

改行文字。

"\r"

復帰文字。

"\t"

水平タブ文字。

"\v"

垂直タブ文字。

"\""

二重引用符文字。

"\ooo"

8 進値 ooo を持つ文字。（C とは異なり）ちょうど 3 桁である必要があります。

"\xhh"

16 進数値 hh を持つ文字。ちょうど 2 桁である必要があります。

In the current implementation "\000" and "\x00" cannot be used in strings.

"\\"

文字としてのバックスラッシュ文字。

容量の接尾辞¶

コマンドがバイト単位で計算されるパラメーターをとるとき、キロバイト、メガバイト、それより大きい容量を指定するために、以下の接尾辞のどれかをとることができます:

k または K または KiB

キロ（1024 の掛け算）バイト単位の容量です。

KB

国際単位系（SI）の 1000 バイト単位の容量です。

M または MiB

メガ（1048576 の掛け算）バイト単位の容量です。

MB

国際単位系（SI）の 1000000 バイト単位の容量です。

G または GiB

ギガ（2 の 30 乗の掛け算）バイト単位の容量です。

GB

国際単位系（SI）の 10 の 9 乗バイト単位の容量です。

T または TiB

テラ（2 の 40 乗の掛け算）バイト単位の容量です。

TB

国際単位系（SI）の 10 の 12 乗バイト単位の容量です。

P または PiB

ペタ（2 の 50 乗の掛け算）バイト単位の容量です。

PB

国際単位系（SI）の 10 の 15 乗バイト単位の容量です。

E または EiB

エクサ（2 の 60 乗の掛け算）バイト単位の容量です。

EB

国際単位系（SI）の 10 の 18 乗バイト単位の容量です。

Z または ZiB

ゼタ（2 の 70 乗の掛け算）バイト単位の容量です。

ZB

国際単位系（SI）の 10 の 21 乗バイト単位の容量です。

Y または YiB

ヨタ（2 の 80 乗の掛け算）バイト単位の容量です。

YB

国際単位系（SI）の 10 の 24 乗バイト単位の容量です。

例:

 truncate-size /file 1G

ファイルを 1 ギガバイトに切り詰めます。

いくつかのコマンドはキロバイトまたはメガバイト単位の容量をとるので注意してください (たとえば、"memsize" のパラメーターはすでにメガバイト単位で指定されています)。接尾辞をつけることにより、期待しない結果になることがあります。

10 進数値および 16 進数値¶

For specifying the radix (base) use the C convention: 0 to prefix an octal number or "0x" to prefix a hexadecimal number. For example:

 1234      10 進数 1234
 02322     8 進数、10 進数の 1234
 0x4d2     16 進数、10 進数の 1234

When using the "chmod" command, you almost always want to specify an octal number for the mode, and you must prefix it with 0 (unlike the Unix chmod(1) program):

 chmod 0777 /public  # 正解
 chmod 777 /public   # 誤り! このモードは 10 進 777 = 8 進 01411 です。

Commands that return numbers usually print them in decimal, but some commands print numbers in other radices (eg. "umask" prints the mode in octal, preceded by 0).

LOCAL COMMANDS WITH INLINE EXECUTION¶

If a line starts with <! then the shell command is executed (as for !), but subsequently any output (stdout) of the shell command is parsed and executed as guestfish commands.

Thus you can use shell script to construct arbitrary guestfish commands which are then parsed by guestfish.

For example it is tedious to create a sequence of files (eg. /foo.1 through /foo.100) using guestfish commands alone. However this is simple if we use a shell script to create the guestfish commands for us:

 <! for n in `seq 1 100`; do echo write /foo.$n $n; done

or with names like /foo.001:

 <! for n in `seq 1 100`; do printf "write /foo.%03d %d\n" $n $n; done

When using guestfish interactively it can be helpful to just run the shell script first (ie. remove the initial "<" character so it is just an ordinary ! local command), see what guestfish commands it would run, and when you are happy with those prepend the "<" character to run the guestfish commands for real.

CONTROLLING MULTIPLE GUESTFISH PROCESSES¶

The "eval" statement sets the environment variable $GUESTFISH_PID, which is how the --remote option knows where to send the commands. You can have several guestfish listener processes running using:

 eval "`guestfish --listen`"
 pid1=$GUESTFISH_PID
 eval "`guestfish --listen`"
 pid2=$GUESTFISH_PID
 ...
 guestfish --remote=$pid1 cmd
 guestfish --remote=$pid2 cmd

REMOTE CONTROL AND CSH¶

csh 系のシェル (csh, tcsh など) を使用するとき、--csh オプションを追加する必要があります:

 eval "`guestfish --listen --csh`"

リモート制御の詳細¶

Remote control happens over a Unix domain socket called /tmp/.guestfish-$UID/socket-$PID, where $UID is the effective user ID of the process, and $PID is the process ID of the server.

Guestfish client and server versions must match exactly.

Older versions of guestfish were vulnerable to CVE-2013-4419 (see "CVE-2013-4419" in guestfs(3)). This is fixed in the current version.

USING REMOTE CONTROL ROBUSTLY FROM SHELL SCRIPTS¶

From Bash, you can use the following code which creates a guestfish instance, correctly quotes the command line, handles failure to start, and cleans up guestfish when the script exits:

 #!/bin/bash -
 
 set -e
 
 guestfish[0]="guestfish"
 guestfish[1]="--listen"
 guestfish[2]="--ro"
 guestfish[3]="-a"
 guestfish[4]="disk.img"
 
 GUESTFISH_PID=
 eval $("${guestfish[@]}")
 if [ -z "$GUESTFISH_PID" ]; then
     echo "error: guestfish didn't start up, see error messages above"
     exit 1
 fi
 
 cleanup_guestfish ()
 {
     guestfish --remote -- exit >/dev/null 2>&1 ||:
 }
 trap cleanup_guestfish EXIT ERR
 
 guestfish --remote -- run
 
 # ...

REMOTE CONTROL DOES NOT WORK WITH -a ETC. OPTIONS¶

Options such as -a, --add, -N, --new etc don’t interact properly with remote support. They are processed locally, and not sent through to the remote guestfish. In particular this won't do what you expect:

 guestfish --remote --add disk.img

Don’t use these options. Use the equivalent commands instead, eg:

 guestfish --remote add-drive disk.img

または:

 guestfish --remote
 ><fs> add disk.img

REMOTE CONTROL RUN COMMAND HANGING¶

Using the "run" (or "launch") command remotely in a command substitution context hangs, ie. don't do (note the backquotes):

 a=`guestfish --remote run`

Since the "run" command produces no output on stdout, this is not useful anyway. For further information see https://bugzilla.redhat.com/show_bug.cgi?id=592910.

例¶

Create a 1G disk with an ext4-formatted partition, called test1.img in the current directory:

 guestfish -N fs:ext4

VFAT フォーマットのパーティションを持つ 32MB ディスクを作成して、マウントします:

 guestfish -N fs:vfat:32M -m /dev/sda1

200MB の空ディスクを作成します:

 guestfish -N disk:200M

Create a blank 200MB disk called blankdisk.img (instead of test1.img):

 guestfish -N blankdisk.img=disk:200M

-N disk - create a blank disk¶

"guestfish -N [filename=]disk[:size]"

Create a blank disk, size 1G (by default).

The default size can be changed by supplying an optional parameter.

オプションのパラメーターは次のとおりです:

 Name          Default value
 size          1G            the size of the disk image

-N part - create a partitioned disk¶

"guestfish -N [filename=]part[:size[:partition]]"

Create a disk with a single partition. By default the size of the disk is 1G (the available space in the partition will be a tiny bit smaller) and the partition table will be MBR (old DOS-style).

These defaults can be changed by supplying optional parameters.

オプションのパラメーターは次のとおりです:

 Name          Default value
 size          1G            the size of the disk image
 partition     mbr           partition table type

-N fs - create a filesystem¶

"guestfish -N [filename=]fs[:filesystem[:size[:partition]]]"

Create a disk with a single partition, with the partition containing an empty filesystem. This defaults to creating a 1G disk (the available space in the filesystem will be a tiny bit smaller) with an MBR (old DOS-style) partition table and an ext2 filesystem.

These defaults can be changed by supplying optional parameters.

オプションのパラメーターは次のとおりです:

 Name          Default value
 filesystem    ext2          the type of filesystem to use
 size          1G            the size of the disk image
 partition     mbr           partition table type

-N lv - create a disk with logical volume¶

"guestfish -N [filename=]lv[:name[:size[:partition]]]"

Create a disk with a single partition, set up the partition as an LVM2 physical volume, and place a volume group and logical volume on there. This defaults to creating a 1G disk with the VG and LV called "/dev/VG/LV". You can change the name of the VG and LV by supplying an alternate name as the first optional parameter.

Note this does not create a filesystem. Use 'lvfs' to do that.

オプションのパラメーターは次のとおりです:

 Name          Default value
 name          /dev/VG/LV    the name of the VG and LV to use
 size          1G            the size of the disk image
 partition     mbr           partition table type

-N lvfs - create a disk with logical volume and filesystem¶

"guestfish -N [filename=]lvfs[:name[:filesystem[:size[:partition]]]]"

Create a disk with a single partition, set up the partition as an LVM2 physical volume, and place a volume group and logical volume on there. Then format the LV with a filesystem. This defaults to creating a 1G disk with the VG and LV called "/dev/VG/LV", with an ext2 filesystem.

オプションのパラメーターは次のとおりです:

 Name          Default value
 name          /dev/VG/LV    the name of the VG and LV to use
 filesystem    ext2          the type of filesystem to use
 size          1G            the size of the disk image
 partition     mbr           partition table type

-N bootroot - create a boot and root filesystem¶

"guestfish -N [filename=]bootroot[:bootfs[:rootfs[:size[:bootsize[:partition]]]]]"

Create a disk with two partitions, for boot and root filesystem. Format the two filesystems independently. There are several optional parameters which control the exact layout and filesystem types.

オプションのパラメーターは次のとおりです:

 Name          Default value
 bootfs        ext2          the type of filesystem to use for boot
 rootfs        ext2          the type of filesystem to use for root
 size          1G            the size of the disk image
 bootsize      128M          the size of the boot filesystem
 partition     mbr           partition table type

-N bootrootlv - create a boot and root filesystem using LVM¶

"guestfish -N [filename=]bootrootlv[:name[:bootfs[:rootfs[:size[:bootsize[:partition]]]]]]"

This is the same as "bootroot" but the root filesystem (only) is placed on a logical volume, named by default "/dev/VG/LV". There are several optional parameters which control the exact layout.

オプションのパラメーターは次のとおりです:

 Name          Default value
 name          /dev/VG/LV    the name of the VG and LV for root
 bootfs        ext2          the type of filesystem to use for boot
 rootfs        ext2          the type of filesystem to use for root
 size          1G            the size of the disk image
 bootsize      128M          the size of the boot filesystem
 partition     mbr           partition table type

-a disk.img¶

-a file:///path/to/disk.img¶

Add the local disk image (or device) called disk.img.

-a ftp://[user@]example.com[:port]/disk.img¶

-a ftps://[user@]example.com[:port]/disk.img¶

-a http://[user@]example.com[:port]/disk.img¶

-a https://[user@]example.com[:port]/disk.img¶

-a tftp://[user@]example.com[:port]/disk.img¶

Add a disk located on a remote FTP, HTTP or TFTP server.

The equivalent API command would be:

 ><fs> add /disk.img protocol:(ftp|...) server:tcp:example.com

-a gluster://example.com[:port]/volname/image¶

Add a disk image located on GlusterFS storage.

The server is the one running "glusterd", and may be "localhost".

The equivalent API command would be:

 ><fs> add volname/image protocol:gluster server:tcp:example.com

-a iscsi://example.com[:port]/target-iqn-name[/lun]¶

Add a disk located on an iSCSI server.

The equivalent API command would be:

 ><fs> add target-iqn-name/lun protocol:iscsi server:tcp:example.com

-a nbd://example.com[:port]¶

-a nbd://example.com[:port]/exportname¶

-a nbd://?socket=/socket¶

-a nbd:///exportname?socket=/socket¶

Add a disk located on Network Block Device (nbd) storage.

The /exportname part of the URI specifies an NBD export name, but is usually left empty.

The optional ?socket parameter can be used to specify a Unix domain socket that we talk to the NBD server over. Note that you cannot mix server name (ie. TCP/IP) and socket path.

The equivalent API command would be (no export name):

 ><fs> add "" protocol:nbd server:[tcp:example.com|unix:/socket]

-a rbd:///pool/disk¶

-a rbd://example.com[:port]/pool/disk¶

Add a disk image located on a Ceph (RBD/librbd) storage volume.

Although libguestfs and Ceph supports multiple servers, only a single server can be specified when using this URI syntax.

The equivalent API command would be:

 ><fs> add pool/disk protocol:rbd server:tcp:example.com:port

-a sheepdog://[example.com[:port]]/volume/image¶

Add a disk image located on a Sheepdog volume.

The server name is optional. Although libguestfs and Sheepdog supports multiple servers, only at most one server can be specified when using this URI syntax.

The equivalent API command would be:

 ><fs> add volume protocol:sheepdog [server:tcp:example.com]

-a ssh://[user@]example.com[:port]/disk.img¶

Add a disk image located on a remote server, accessed using the Secure Shell (ssh) SFTP protocol. SFTP is supported out of the box by all major SSH servers.

The equivalent API command would be:

 ><fs> add /disk protocol:ssh server:tcp:example.com [username:user]

Note that the URIs follow the syntax of RFC 3986: in particular, there are restrictions on the allowed characters for the various components of the URI. Characters such as ":", "@", and "/" must be percent-encoded:

 $ guestfish -a ssh://user:pass%40word@example.com/disk.img

In this case, the password is "pass@word".

EXAMPLES OF PROMPTS¶

Note that these examples require a terminal that supports ANSI escape codes.

•  GUESTFISH_PS1='\[\e[1;30m\]><fs>\[\e[0;30m\] '
      

  A bold black version of the ordinary prompt.

•  GUESTFISH_PS1='\[\e[1;32m\]><fs>\[\e[0;31m\] '
   GUESTFISH_OUTPUT='\e[0m'
   GUESTFISH_RESTORE="$GUESTFISH_OUTPUT"
   GUESTFISH_INIT='\e[1;34m'
      

  Blue welcome text, green prompt, red commands, black command output.

help¶

 help
 help cmd
 help -l|--list

Without any parameter, this provides general help.

With a "cmd" parameter, this displays detailed help for that command.

With -l or --list, this list all commands.

exit¶

quit¶

これは guestfish を終了します。"^D" キーを使用することもできます。

alloc¶

allocate¶

 alloc filename size

This creates an empty (zeroed) file of the given size, and then adds so it can be further examined.

For more advanced image creation, see "disk-create".

Size can be specified using standard suffixes, eg. "1M".

スパースなファイルを作成するには、代わりに "sparse" を使用します。非スパースなディスクイメージを作成するには、 "準備済みディスクイメージ" を参照してください。

copy-in¶

 copy-in local [local ...] /remotedir

"copy-in" copies local files or directories recursively into the disk image, placing them in the directory called /remotedir (which must exist). This guestfish meta-command turns into a sequence of "tar-in" and other commands as necessary.

Multiple local files and directories can be specified, but the last parameter must always be a remote directory. Wildcards cannot be used.

copy-out¶

 copy-out remote [remote ...] localdir

"copy-out" copies remote files or directories recursively out of the disk image, placing them on the host disk in a local directory called "localdir" (which must exist). This guestfish meta-command turns into a sequence of "download", "tar-out" and other commands as necessary.

Multiple remote files and directories can be specified, but the last parameter must always be a local directory. To download to the current directory, use "." as in:

 copy-out /home .

Wildcards cannot be used in the ordinary command, but you can use them with the help of "glob" like this:

 glob copy-out /home/* .

delete-event¶

 delete-event name

Delete the event handler which was previously registered as "name". If multiple event handlers were registered with the same name, they are all deleted.

guestfish コマンドの "event" および "list-events" 参照。

display¶

 display filename

Use "display" (a graphical display program) to display an image file. It downloads the file, and runs "display" on it.

To use an alternative program, set the "GUESTFISH_DISPLAY_IMAGE" environment variable. For example to use the GNOME display program:

 export GUESTFISH_DISPLAY_IMAGE=eog

display(1) 参照。

echo¶

 echo [params ...]

パラメーターを端末に返します。

edit¶

vi¶

emacs¶

 edit filename

This is used to edit a file. It downloads the file, edits it locally using your editor, then uploads the result.

The editor is $EDITOR. However if you use the alternate commands "vi" or "emacs" you will get those corresponding editors.

event¶

 event name eventset "shell script ..."

Register a shell script fragment which is executed when an event is raised. See "guestfs_set_event_callback" in guestfs(3) for a discussion of the event API in libguestfs.

The "name" parameter is a name that you give to this event handler. It can be any string (even the empty string) and is simply there so you can delete the handler using the guestfish "delete-event" command.

The "eventset" parameter is a comma-separated list of one or more events, for example "close" or "close,trace". The special value "*" means all events.

The third and final parameter is the shell script fragment (or any external command) that is executed when any of the events in the eventset occurs. It is executed using "$SHELL -c", or if $SHELL is not set then /bin/sh -c.

The shell script fragment receives callback parameters as arguments $1, $2 etc. The actual event that was called is available in the environment variable $EVENT.

 event "" close "echo closed"
 event messages appliance,library,trace "echo $@"
 event "" progress "echo progress: $3/$4"
 event "" * "echo $EVENT $@"

guestfish コマンドの "delete-event" および "list-events" 参照。

glob¶

 glob command args...

Expand wildcards in any paths in the args list, and run "command" repeatedly on each matching path.

"WILDCARDS AND GLOBBING" 参照。

hexedit¶

 hexedit <filename|device>
 hexedit <filename|device> <max>
 hexedit <filename|device> <start> <max>

Use hexedit (a hex editor) to edit all or part of a binary file or block device.

This command works by downloading potentially the whole file or device, editing it locally, then uploading it. If the file or device is large, you have to specify which part you wish to edit by using "max" and/or "start" "max" parameters. "start" and "max" are specified in bytes, with the usual modifiers allowed such as "1M" (1 megabyte).

For example to edit the first few sectors of a disk you might do:

 hexedit /dev/sda 1M

which would allow you to edit anywhere within the first megabyte of the disk.

To edit the superblock of an ext2 filesystem on /dev/sda1, do:

 hexedit /dev/sda1 0x400 0x400

(assuming the superblock is in the standard location).

This command requires the external hexedit(1) program. You can specify another program to use by setting the "HEXEDITOR" environment variable.

"hexdump" 参照。

lcd¶

 lcd directory

Change the local directory, ie. the current directory of guestfish itself.

Note that "!cd" won't do what you might expect.

list-events¶

 list-events

List the event handlers registered using the guestfish "event" command.

man¶

manual¶

  man

guestfish のマニュアルページを開きます。

more¶

less¶

 more filename
 less filename

ファイルを表示するために使用します。

デフォルトのビューアーは $PAGER です。 しかし代替のコマンド "less" を使用すると、明示的に "less" コマンドが使えます。

reopen¶

  reopen

Close and reopen the libguestfs handle. It is not necessary to use this normally, because the handle is closed properly when guestfish exits. However this is occasionally useful for testing.

setenv¶

  setenv VAR value

環境変数 "VAR" を文字列 "value" に設定します。

環境変数の値を表示するには、次のようにシェルコマンドを使用します:

 !echo $VAR

sparse¶

 sparse filename size

This creates an empty sparse file of the given size, and then adds so it can be further examined.

In all respects it works the same as the "alloc" command, except that the image file is allocated sparsely, which means that disk blocks are not assigned to the file until they are needed. Sparse disk files only use space when written to, but they are slower and there is a danger you could run out of real disk space during a write operation.

For more advanced image creation, see "disk-create".

Size can be specified using standard suffixes, eg. "1M".

See also the guestfish "scratch" command.

supported¶

 supported

This command returns a list of the optional groups known to the daemon, and indicates which ones are supported by this build of the libguestfs appliance.

"AVAILABILITY" in guestfs(3) 参照。

time¶

 time command args...

Run the command as usual, but print the elapsed time afterwards. This can be useful for benchmarking operations.

unsetenv¶

  unsetenv VAR

環境から "VAR" を削除します。

acl-delete-def-file¶

 acl-delete-def-file dir

この関数はディレクトリー "dir" に設定されている標準の POSIX アクセス制御リスト (ACL: Access Control List) を削除します。

This command depends on the feature "acl". See also "feature-available".

acl-get-file¶

 acl-get-file path acltype

This function returns the POSIX Access Control List (ACL) attached to "path". The ACL is returned in "long text form" (see acl(5)).

The "acltype" parameter may be:

"access"

Return the ordinary (access) ACL for any file, directory or other filesystem object.

"default"

Return the default ACL. Normally this only makes sense if "path" is a directory.

This command depends on the feature "acl". See also "feature-available".

acl-set-file¶

 acl-set-file path acltype acl

This function sets the POSIX Access Control List (ACL) attached to "path".

The "acltype" parameter may be:

"access"

Set the ordinary (access) ACL for any file, directory or other filesystem object.

"default"

Set the default ACL. Normally this only makes sense if "path" is a directory.

The "acl" parameter is the new ACL in either "long text form" or "short text form" (see acl(5)). The new ACL completely replaces any previous ACL on the file. The ACL must contain the full Unix permissions (eg. "u::rwx,g::rx,o::rx").

If you are specifying individual users or groups, then the mask field is also required (eg. "m::rwx"), followed by the "u:ID:..." and/or "g:ID:..." field(s). A full ACL string might therefore look like this:

 u::rwx,g::rwx,o::rwx,m::rwx,u:500:rwx,g:500:rwx
 \ Unix permissions / \mask/ \      ACL        /

You should use numeric UIDs and GIDs. To map usernames and groupnames to the correct numeric ID in the context of the guest, use the Augeas functions (see "aug-init").

This command depends on the feature "acl". See also "feature-available".

add-cdrom¶

 add-cdrom filename

この関数は仮想 CD-ROM ディスクイメージを仮想マシンに追加します。

The image is added as read-only drive, so this function is equivalent of "add-drive-ro".

This function is deprecated. In new code, use the "add-drive-ro" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

add-domain¶

domain¶

 add-domain dom [libvirturi:..] [readonly:true|false] [iface:..] [live:true|false] [allowuuid:true|false] [readonlydisk:..] [cachemode:..] [discard:..] [copyonread:true|false]

This function adds the disk(s) attached to the named libvirt domain "dom". It works by connecting to libvirt, requesting the domain and domain XML from libvirt, parsing it for disks, and calling "add-drive-opts" on each one.

The number of disks added is returned. This operation is atomic: if an error is returned, then no disks are added.

This function does some minimal checks to make sure the libvirt domain is not running (unless "readonly" is true). In a future version we will try to acquire the libvirt lock on each disk.

Disks must be accessible locally. This often means that adding disks from a remote libvirt connection (see http://libvirt.org/remote.html) will fail unless those disks are accessible via the same device path locally too.

The optional "libvirturi" parameter sets the libvirt URI (see http://libvirt.org/uri.html). If this is not set then we connect to the default libvirt URI (or one set through an environment variable, see the libvirt documentation for full details).

The optional "live" flag controls whether this call will try to connect to a running virtual machine "guestfsd" process if it sees a suitable <channel> element in the libvirt XML definition. The default (if the flag is omitted) is never to try. See "ATTACHING TO RUNNING DAEMONS" in guestfs(3) for more information.

If the "allowuuid" flag is true (default is false) then a UUID may be passed instead of the domain name. The "dom" string is treated as a UUID first and looked up, and if that lookup fails then we treat "dom" as a name as usual.

The optional "readonlydisk" parameter controls what we do for disks which are marked <readonly/> in the libvirt XML. Possible values are:

readonlydisk = "error"

"readonly" が偽ならば:

The whole call is aborted with an error if any disk with the <readonly/> flag is found.

"readonly" が真ならば:

<readonly/> フラグを持つディスクは読み込み専用で追加されます。

readonlydisk = "read"

"readonly" が偽ならば:

<readonly/> フラグを持つディスクは読み込み専用で追加されます。他のディスクは読み書き用で追加されます。

"readonly" が真ならば:

<readonly/> フラグを持つディスクは読み込み専用で追加されます。

readonlydisk = "write" (デフォルト)

"readonly" が偽ならば:

<readonly/> フラグを持つディスクは読み書き用で追加されます。

"readonly" が真ならば:

<readonly/> フラグを持つディスクは読み込み専用で追加されます。

readonlydisk = "ignore"

"readonly" が真または偽ならば:

<readonly/> フラグのあるディスクはスキップされます

他のオプション引数は直接 "add-drive-opts" に渡されます。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

add-drive¶

add¶

add-drive-opts¶

 add-drive filename [readonly:true|false] [format:..] [iface:..] [name:..] [label:..] [protocol:..] [server:..] [username:..] [secret:..] [cachemode:..] [discard:..] [copyonread:true|false]

This function adds a disk image called filename to the handle. filename may be a regular host file or a host device.

When this function is called before "launch" (the usual case) then the first time you call this function, the disk appears in the API as /dev/sda, the second time as /dev/sdb, and so on.

In libguestfs ≥ 1.20 you can also call this function after launch (with some restrictions). This is called "hotplugging". When hotplugging, you must specify a "label" so that the new disk gets a predictable name. For more information see "HOTPLUGGING" in guestfs(3).

You don't necessarily need to be root when using libguestfs. However you obviously do need sufficient permissions to access the filename for whatever operations you want to perform (ie. read access if you just want to read the image or write access if you want to modify the image).

This call checks that filename exists.

filename may be the special string "/dev/null". See "NULL DISKS" in guestfs(3).

オプション引数は次のとおりです:

"readonly"

If true then the image is treated as read-only. Writes are still allowed, but they are stored in a temporary snapshot overlay which is discarded at the end. The disk that you add is not modified.

"format"

This forces the image format. If you omit this (or use "add-drive" or "add-drive-ro") then the format is automatically detected. Possible formats include "raw" and "qcow2".

Automatic detection of the format opens you up to a potential security hole when dealing with untrusted raw-format images. See CVE-2010-3851 and RHBZ#642934. Specifying the format closes this security hole.

"iface"

This rarely-used option lets you emulate the behaviour of the deprecated "add-drive-with-if" call (q.v.)

"name"

The name the drive had in the original guest, e.g. /dev/sdb. This is used as a hint to the guest inspection process if it is available.

"label"

Give the disk a label. The label should be a unique, short string using only ASCII characters "[a-zA-Z]". As well as its usual name in the API (such as /dev/sda), the drive will also be named /dev/disk/guestfs/label.

"ディスクラベル" in guestfs(3)を参照してください。

"protocol"

The optional protocol argument can be used to select an alternate source protocol.

See also: "REMOTE STORAGE" in guestfs(3).

"server"

For protocols which require access to a remote server, this is a list of server(s).

 Protocol       Number of servers required
 --------       --------------------------
 file           List must be empty or param not used at all
 ftp|ftps|http|https|tftp  Exactly one
 gluster        Exactly one
 iscsi          Exactly one
 nbd            Exactly one
 rbd            Zero or more
 sheepdog       Zero or more
 ssh            Exactly one
    

Each list element is a string specifying a server. The string must be in one of the following formats:

 hostname
 hostname:port
 tcp:hostname
 tcp:hostname:port
 unix:/path/to/socket
    

If the port number is omitted, then the standard port number for the protocol is used (see /etc/services).

"username"

For the "ftp", "ftps", "http", "https", "iscsi", "rbd", "ssh" and "tftp" protocols, this specifies the remote username.

If not given, then the local username is used for "ssh", and no authentication is attempted for ceph. But note this sometimes may give unexpected results, for example if using the libvirt backend and if the libvirt backend is configured to start the qemu appliance as a special user such as "qemu.qemu". If in doubt, specify the remote username you want.

"secret"

For the "rbd" protocol only, this specifies the ‘secret’ to use when connecting to the remote device. It must be base64 encoded.

If not given, then a secret matching the given username will be looked up in the default keychain locations, or if no username is given, then no authentication will be used.

"cachemode"

Choose whether or not libguestfs will obey sync operations (safe but slow) or not (unsafe but fast). The possible values for this string are:

"discard"

Enable or disable discard (a.k.a. trim or unmap) support on this drive. If enabled, operations such as "fstrim" will be able to discard / make thin / punch holes in the underlying host file or device.

Possible discard settings are:

"copyonread"

The boolean parameter "copyonread" enables copy-on-read support. This only affects disk formats which have backing files, and causes reads to be stored in the overlay layer, speeding up multiple reads of the same area of disk.

The default is false.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

add-drive-ro¶

add-ro¶

 add-drive-ro filename

This function is the equivalent of calling "add-drive-opts" with the optional parameter "GUESTFS_ADD_DRIVE_OPTS_READONLY" set to 1, so the disk is added read-only, with the format being detected automatically.

add-drive-ro-with-if¶

 add-drive-ro-with-if filename iface

This is the same as "add-drive-ro" but it allows you to specify the QEMU interface emulation to use at run time.

この関数は推奨されません。 新しいコードでは、代わりに "add-drive" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

add-drive-scratch¶

scratch¶

 add-drive-scratch size [name:..] [label:..]

This command adds a temporary scratch drive to the handle. The "size" parameter is the virtual size (in bytes). The scratch drive is blank initially (all reads return zeroes until you start writing to it). The drive is deleted when the handle is closed.

The optional arguments "name" and "label" are passed through to "add-drive".

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

add-drive-with-if¶

 add-drive-with-if filename iface

This is the same as "add-drive" but it allows you to specify the QEMU interface emulation to use at run time.

この関数は推奨されません。 新しいコードでは、代わりに "add-drive" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

aug-clear¶

 aug-clear augpath

Set the value associated with "path" to "NULL". This is the same as the augtool(1) "clear" command.

aug-close¶

 aug-close

Close the current Augeas handle and free up any resources used by it. After calling this, you have to call "aug-init" again before you can use any other Augeas functions.

aug-defnode¶

 aug-defnode name expr val

その値が "expr" を評価した結果である変数 "name" を定義します。

If "expr" evaluates to an empty nodeset, a node is created, equivalent to calling "aug-set" "expr", "value". "name" will be the nodeset containing that single node.

成功した場合、ノードセットに含まれるノード数を含むペアが返されます。また、ノードが作成されたかどうかの論理フラグが返されます。

aug-defvar¶

 aug-defvar name expr

"expr" を評価した結果の値である Augeas 変数 "name" を定義します。 "expr" が NULL ならば、 "name" が定義されません。

成功した場合、"expr" にあるノード数が返されます。または、"expr" がノードセット以外のものであると評価された場合、0 が返されます。

aug-get¶

 aug-get augpath

"path" と関連づけられた値を検索します。"path" がちょうど一つのノードと一致した場合、"value" が返されます。

aug-init¶

 aug-init root flags

Create a new Augeas handle for editing configuration files. If there was any previous Augeas handle associated with this guestfs session, then it is closed.

You must call this before using any other "aug-*" commands.

"root" is the filesystem root. "root" must not be NULL, use / instead.

The flags are the same as the flags defined in <augeas.h>, the logical or of the following integers:

"AUG_SAVE_BACKUP" = 1

".augsave" 拡張子を付けて元のファイルを保持します。

"AUG_SAVE_NEWFILE" = 2

拡張子 ".augnew" を付けたファイルに変更点を保存し、元を上書きしません。"AUG_SAVE_BACKUP" を上書きします。

"AUG_TYPE_CHECK" = 4

Typecheck lenses.

This option is only useful when debugging Augeas lenses. Use of this option may require additional memory for the libguestfs appliance. You may need to set the "LIBGUESTFS_MEMSIZE" environment variable or call "set-memsize".

"AUG_NO_STDINC" = 8

モジュールの標準的な読み込みパスを使用しません。

"AUG_SAVE_NOOP" = 16

Make save a no-op, just record what would have been changed.

"AUG_NO_LOAD" = 32

"aug-init" にあるツリーを読み込みません。

ハンドルを閉じるには、"aug-close" を呼び出す必要があります。

Augeas に関する詳細は http://augeas.net/ を参照してください。

aug-insert¶

 aug-insert augpath label true|false

Create a new sibling "label" for "path", inserting it into the tree before or after "path" (depending on the boolean flag "before").

"path" must match exactly one existing node in the tree, and "label" must be a label, ie. not contain /, "*" or end with a bracketed index "[N]".

aug-label¶

 aug-label augpath

The label (name of the last element) of the Augeas path expression "augpath" is returned. "augpath" must match exactly one node, else this function returns an error.

aug-load¶

 aug-load

ファイルをツリーの中に読み込みます

See "aug_load" in the Augeas documentation for the full gory details.

aug-ls¶

 aug-ls augpath

This is just a shortcut for listing "aug-match" "path/*" and sorting the resulting nodes into alphabetical order.

aug-match¶

 aug-match augpath

Returns a list of paths which match the path expression "path". The returned paths are sufficiently qualified so that they match exactly one node in the current tree.

aug-mv¶

 aug-mv src dest

ノード "src" を "dest" に移動します。 "src" はただ一つのノードである必要があります。 "dest" は存在すると上書きされます。

aug-rm¶

 aug-rm augpath

"path" とすべての子を削除します。

成功すると、これは削除された項目の数が返します。

aug-save¶

 aug-save

これにより、すべての保留の変更がディスクに書き込まれます。

The flags which were passed to "aug-init" affect exactly how files are saved.

aug-set¶

 aug-set augpath val

Set the value associated with "path" to "val".

In the Augeas API, it is possible to clear a node by setting the value to NULL. Due to an oversight in the libguestfs API you cannot do that with this call. Instead you must use the "aug-clear" call.

aug-setm¶

 aug-setm base sub val

Change multiple Augeas nodes in a single operation. "base" is an expression matching multiple nodes. "sub" is a path expression relative to "base". All nodes matching "base" are found, and then for each node, "sub" is changed to "val". "sub" may also be "NULL" in which case the "base" nodes are modified.

This returns the number of nodes modified.

aug-transform¶

 aug-transform lens file [remove:true|false]

Add an Augeas transformation for the specified "lens" so it can handle "file".

If "remove" is true ("false" by default), then the transformation is removed.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

available¶

 available 'groups ...'

This command is used to check the availability of some groups of functionality in the appliance, which not all builds of the libguestfs appliance will be able to provide.

The libguestfs groups, and the functions that those groups correspond to, are listed in "AVAILABILITY" in guestfs(3). You can also fetch this list at runtime by calling "available-all-groups".

The argument "groups" is a list of group names, eg: "["inotify", "augeas"]" would check for the availability of the Linux inotify functions and Augeas (configuration file editing) functions.

The command returns no error if all requested groups are available.

It fails with an error if one or more of the requested groups is unavailable in the appliance.

If an unknown group name is included in the list of groups then an error is always returned.

注記:

• "feature-available" is the same as this call, but with a slightly simpler to use API: that call returns a boolean true/false instead of throwing an error.
• You must call "launch" before calling this function.

  The reason is because we don't know what groups are supported by the appliance/daemon until it is running and can be queried.

• If a group of functions is available, this does not necessarily mean that they will work. You still have to check for errors when calling individual API functions even if they are available.
• It is usually the job of distro packagers to build complete functionality into the libguestfs appliance. Upstream libguestfs, if built from source with all requirements satisfied, will support everything.
• This call was added in version 1.0.80. In previous versions of libguestfs all you could do would be to speculatively execute a command to find out if the daemon implemented it. See also "version".

"filesystem-available" 参照。

available-all-groups¶

 available-all-groups

This command returns a list of all optional groups that this daemon knows about. Note this returns both supported and unsupported groups. To find out which ones the daemon can actually support you have to call "available" / "feature-available" on each member of the returned list.

See also "available", "feature-available" and "AVAILABILITY" in guestfs(3).

base64-in¶

 base64-in (base64file|-) filename

This command uploads base64-encoded data from "base64file" to filename.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

base64-out¶

 base64-out filename (base64file|-)

This command downloads the contents of filename, writing it out to local file "base64file" encoded as base64.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

blkdiscard¶

 blkdiscard device

This discards all blocks on the block device "device", giving the free space back to the host.

This operation requires support in libguestfs, the host filesystem, qemu and the host kernel. If this support isn't present it may give an error or even appear to run but do nothing. You must also set the "discard" attribute on the underlying drive (see "add-drive-opts").

This command depends on the feature "blkdiscard". See also "feature-available".

blkdiscardzeroes¶

 blkdiscardzeroes device

This call returns true if blocks on "device" that have been discarded by a call to "blkdiscard" are returned as blocks of zero bytes when read the next time.

If it returns false, then it may be that discarded blocks are read as stale or random data.

This command depends on the feature "blkdiscardzeroes". See also "feature-available".

blkid¶

 blkid device

This command returns block device attributes for "device". The following fields are usually present in the returned hash. Other fields may also be present.

"UUID"

このデバイスのUUID。

"LABEL"

このデバイスのラベル。

"VERSION"

blkid コマンドのバージョン。

"TYPE"

このデバイスのファイルシステム形式または RAID。

"USAGE"

このデバイスの使用法です。たとえば、"filesystem" や "raid"。

blockdev-flushbufs¶

 blockdev-flushbufs device

"device" と関連づけられている内部バッファーをフラッシュするようカーネルに指示します。

これは blockdev(8) コマンドを使用します。

blockdev-getbsz¶

 blockdev-getbsz device

これはデバイスのブロック容量を返します。

Note: this is different from both size in blocks and filesystem block size. Also this setting is not really used by anything. You should probably not use it for anything. Filesystems have their own idea about what block size to choose.

これは blockdev(8) コマンドを使用します。

blockdev-getro¶

 blockdev-getro device

ブロックデバイスが読み込み専用であるかどうかを示す論理値を返します（読み込み専用ならば真、そうでなければ偽）。

これは blockdev(8) コマンドを使用します。

blockdev-getsize64¶

 blockdev-getsize64 device

これはデバイスの容量をバイト単位で返します。

"blockdev-getsz" 参照。

これは blockdev(8) コマンドを使用します。

blockdev-getss¶

 blockdev-getss device

これはブロックデバイスのセクター容量を返します。通常は 512 ですが、最近のデバイスはより大きいかもしれません。

（これはセクターのサイズではありません、そのためには "blockdev-getsz" を使用する必要があることに注意してください）。

これは blockdev(8) コマンドを使用します。

blockdev-getsz¶

 blockdev-getsz device

This returns the size of the device in units of 512-byte sectors (even if the sectorsize isn't 512 bytes ... weird).

See also "blockdev-getss" for the real sector size of the device, and "blockdev-getsize64" for the more useful size in bytes.

これは blockdev(8) コマンドを使用します。

blockdev-rereadpt¶

 blockdev-rereadpt device

"device" のパーティションテーブルを再読み込みします。

これは blockdev(8) コマンドを使用します。

blockdev-setbsz¶

 blockdev-setbsz device blocksize

This call does nothing and has never done anything because of a bug in blockdev. Do not use it.

If you need to set the filesystem block size, use the "blocksize" option of "mkfs".

This function is deprecated. There is no replacement. Consult the API documentation in guestfs(3) for further information.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

blockdev-setra¶

 blockdev-setra device sectors

Set readahead (in 512-byte sectors) for the device.

これは blockdev(8) コマンドを使用します。

blockdev-setro¶

 blockdev-setro device

"device" という名前のブロックデバイスを読み込み専用に設定します。

これは blockdev(8) コマンドを使用します。

blockdev-setrw¶

 blockdev-setrw device

"device" という名前のブロックデバイスを読み書きに設定します。

これは blockdev(8) コマンドを使用します。

btrfs-balance-cancel¶

 btrfs-balance-cancel path

Cancel a running balance on a btrfs filesystem.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-balance-pause¶

 btrfs-balance-pause path

Pause a running balance on a btrfs filesystem.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-balance-resume¶

 btrfs-balance-resume path

Resume a paused balance on a btrfs filesystem.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-balance-status¶

 btrfs-balance-status path

Show the status of a running or paused balance on a btrfs filesystem.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-device-add¶

 btrfs-device-add 'devices ...' fs

"devices" にあるデバイスの一覧を "fs" にマウントされた btrfs ファイルシステムに追加します。もし "devices" が空の一覧ならば、何もしません。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-device-delete¶

 btrfs-device-delete 'devices ...' fs

"devices" にあるデバイスの一覧を "fs" にマウントされた btrfs ファイルシステムから削除します。もし "devices" が空の一覧ならば、何もしません。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-filesystem-balance¶

btrfs-balance¶

 btrfs-filesystem-balance fs

Balance the chunks in the btrfs filesystem mounted at "fs" across the underlying devices.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-filesystem-defragment¶

 btrfs-filesystem-defragment path [flush:true|false] [compress:..]

Defragment a file or directory on a btrfs filesystem. compress is one of zlib or lzo.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-filesystem-resize¶

 btrfs-filesystem-resize mountpoint [size:N]

このコマンドは btrfs ファイルシステムの容量を変更します。

Note that unlike other resize calls, the filesystem has to be mounted and the parameter is the mountpoint not the device (this is a requirement of btrfs itself).

オプションのパラメーターは次のとおりです:

"size"

ファイルシステムの新しい容量（バイト単位）。省略されると、ファイルシステムは最大の容量に変更されます。

btrfs(8) 参照。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-filesystem-show¶

 btrfs-filesystem-show device

Show all the devices where the filesystems in "device" is spanned over.

If not all the devices for the filesystems are present, then this function fails and the "errno" is set to "ENODEV".

This command depends on the feature "btrfs". See also "feature-available".

btrfs-filesystem-sync¶

 btrfs-filesystem-sync fs

"fs" にマウントされた btrfs ファイルシステムにおいて強制同期します。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-fsck¶

 btrfs-fsck device [superblock:N] [repair:true|false]

btrfs ファイルシステムをチェックするために使用されると、"device" はファイルシステムが保存されているデバイスファイルです。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-image¶

 btrfs-image 'source ...' image [compresslevel:N]

This is used to create an image of a btrfs filesystem. All data will be zeroed, but metadata and the like is preserved.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-qgroup-assign¶

 btrfs-qgroup-assign src dst path

Add qgroup "src" to parent qgroup "dst". This command can group several qgroups into a parent qgroup to share common limit.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-qgroup-create¶

 btrfs-qgroup-create qgroupid subvolume

Create a quota group (qgroup) for subvolume at "subvolume".

This command depends on the feature "btrfs". See also "feature-available".

btrfs-qgroup-destroy¶

 btrfs-qgroup-destroy qgroupid subvolume

Destroy a quota group.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-qgroup-limit¶

 btrfs-qgroup-limit subvolume size

Limit the size of the subvolume with path "subvolume".

This command depends on the feature "btrfs". See also "feature-available".

btrfs-qgroup-remove¶

 btrfs-qgroup-remove src dst path

Remove qgroup "src" from the parent qgroup "dst".

This command depends on the feature "btrfs". See also "feature-available".

btrfs-qgroup-show¶

 btrfs-qgroup-show path

Show all subvolume quota groups in a btrfs filesystem, including their usages.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-quota-enable¶

 btrfs-quota-enable fs true|false

Enable or disable subvolume quota support for filesystem which contains "path".

This command depends on the feature "btrfs". See also "feature-available".

btrfs-quota-rescan¶

 btrfs-quota-rescan fs

Trash all qgroup numbers and scan the metadata again with the current config.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-replace¶

 btrfs-replace srcdev targetdev mntpoint

Replace device of a btrfs filesystem. On a live filesystem, duplicate the data to the target device which is currently stored on the source device. After completion of the operation, the source device is wiped out and removed from the filesystem.

The "targetdev" needs to be same size or larger than the "srcdev". Devices which are currently mounted are never allowed to be used as the "targetdev".

This command depends on the feature "btrfs". See also "feature-available".

btrfs-rescue-chunk-recover¶

 btrfs-rescue-chunk-recover device

Recover the chunk tree of btrfs filesystem by scanning the devices one by one.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-rescue-super-recover¶

 btrfs-rescue-super-recover device

Recover bad superblocks from good copies.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-scrub-cancel¶

 btrfs-scrub-cancel path

Cancel a running scrub on a btrfs filesystem.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-scrub-resume¶

 btrfs-scrub-resume path

Resume a previously canceled or interrupted scrub on a btrfs filesystem.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-scrub-start¶

 btrfs-scrub-start path

Reads all the data and metadata on the filesystem, and uses checksums and the duplicate copies from RAID storage to identify and repair any corrupt data.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-scrub-status¶

 btrfs-scrub-status path

Show status of running or finished scrub on a btrfs filesystem.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-set-seeding¶

 btrfs-set-seeding device true|false

btrfs ファイルシステムを含むデバイスの seeding 機能を有効化または無効化します。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-subvolume-create¶

btrfs-subvolume-create-opts¶

 btrfs-subvolume-create dest [qgroupid:..]

Create a btrfs subvolume. The "dest" argument is the destination directory and the name of the subvolume, in the form /path/to/dest/name. The optional parameter "qgroupid" represents the qgroup which the newly created subvolume will be added to.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-subvolume-delete¶

 btrfs-subvolume-delete subvolume

Delete the named btrfs subvolume or snapshot.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-subvolume-get-default¶

 btrfs-subvolume-get-default fs

Get the default subvolume or snapshot of a filesystem mounted at "mountpoint".

This command depends on the feature "btrfs". See also "feature-available".

btrfs-subvolume-list¶

 btrfs-subvolume-list fs

"fs" にマウントされている btrfs ファイルシステムの btrfs スナップショットとサブディレクトリーを一覧表示します。

This command depends on the feature "btrfs". See also "feature-available".

btrfs-subvolume-set-default¶

 btrfs-subvolume-set-default id fs

Set the subvolume of the btrfs filesystem "fs" which will be mounted by default. See "btrfs-subvolume-list" to get a list of subvolumes.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-subvolume-show¶

 btrfs-subvolume-show subvolume

Return detailed information of the subvolume.

This command depends on the feature "btrfs". See also "feature-available".

btrfs-subvolume-snapshot¶

btrfs-subvolume-snapshot-opts¶

 btrfs-subvolume-snapshot source dest [ro:true|false] [qgroupid:..]

Create a snapshot of the btrfs subvolume "source". The "dest" argument is the destination directory and the name of the snapshot, in the form /path/to/dest/name. By default the newly created snapshot is writable, if the value of optional parameter "ro" is true, then a readonly snapshot is created. The optional parameter "qgroupid" represents the qgroup which the newly created snapshot will be added to.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "btrfs". See also "feature-available".

btrfstune-enable-extended-inode-refs¶

 btrfstune-enable-extended-inode-refs device

This will Enable extended inode refs.

This command depends on the feature "btrfs". See also "feature-available".

btrfstune-enable-skinny-metadata-extent-refs¶

 btrfstune-enable-skinny-metadata-extent-refs device

This enable skinny metadata extent refs.

This command depends on the feature "btrfs". See also "feature-available".

btrfstune-seeding¶

 btrfstune-seeding device true|false

Enable seeding of a btrfs device, this will force a fs readonly so that you can use it to build other filesystems.

This command depends on the feature "btrfs". See also "feature-available".

c-pointer¶

 c-pointer

In non-C language bindings, this allows you to retrieve the underlying C pointer to the handle (ie. "h *"). The purpose of this is to allow other libraries to interwork with libguestfs.

canonical-device-name¶

 canonical-device-name device

This utility function is useful when displaying device names to the user. It takes a number of irregular device names and returns them in a consistent format:

/dev/hdX

/dev/vdX

These are returned as /dev/sdX. Note this works for device names and partition names. This is approximately the reverse of the algorithm described in "BLOCK DEVICE NAMING" in guestfs(3).

/dev/mapper/VG-LV

/dev/dm-N

Converted to /dev/VG/LV form using "lvm-canonical-lv-name".

他の文字列は修正されずに返されます。

cap-get-file¶

 cap-get-file path

This function returns the Linux capabilities attached to "path". The capabilities set is returned in text form (see cap_to_text(3)).

If no capabilities are attached to a file, an empty string is returned.

This command depends on the feature "linuxcaps". See also "feature-available".

cap-set-file¶

 cap-set-file path cap

This function sets the Linux capabilities attached to "path". The capabilities set "cap" should be passed in text form (see cap_from_text(3)).

This command depends on the feature "linuxcaps". See also "feature-available".

case-sensitive-path¶

 case-sensitive-path path

This can be used to resolve case insensitive paths on a filesystem which is case sensitive. The use case is to resolve paths which you have read from Windows configuration files or the Windows Registry, to the true path.

The command handles a peculiarity of the Linux ntfs-3g filesystem driver (and probably others), which is that although the underlying filesystem is case-insensitive, the driver exports the filesystem to Linux as case-sensitive.

One consequence of this is that special directories such as C:\windows may appear as /WINDOWS or /windows (or other things) depending on the precise details of how they were created. In Windows itself this would not be a problem.

バグか機能か？次を見て決めてください: http://www.tuxera.com/community/ntfs-3g-faq/#posixfilenames1

"case-sensitive-path" attempts to resolve the true case of each element in the path. It will return a resolved path if either the full path or its parent directory exists. If the parent directory exists but the full path does not, the case of the parent directory will be correctly resolved, and the remainder appended unmodified. For example, if the file "/Windows/System32/netkvm.sys" exists:

"case-sensitive-path" ("/windows/system32/netkvm.sys")

"Windows/System32/netkvm.sys"

"case-sensitive-path" ("/windows/system32/NoSuchFile")

"Windows/System32/NoSuchFile"

"case-sensitive-path" ("/windows/system33/netkvm.sys")

ERROR

Note: Because of the above behaviour, "case-sensitive-path" cannot be used to check for the existence of a file.

Note: This function does not handle drive names, backslashes etc.

"realpath" 参照。

cat¶

 cat path

"path" という名前のファイルの内容を返します。

Because, in C, this function returns a "char *", there is no way to differentiate between a "\0" character in a file and end of string. To handle binary files, use the "read-file" or "download" functions.

checksum¶

 checksum csumtype path

この呼び出しは "path" という名前のファイルの MD5, SHAx または CRC チェックサムを計算します。

計算するチェックサムの種類は、以下の値のどれかである "csumtype" パラメーターにより与えられます:

"crc"

"cksum" コマンドに対して POSIX により指定された巡回冗長検査 (CRC: cyclic redundancy check) を計算します。

"md5"

（"md5sum" プログラムを用いて）MD5 ハッシュを計算します。

"sha1"

（"sha1sum" プログラムを用いて）SHA1 ハッシュを計算します。

"sha224"

（"sha224sum" プログラムを用いて）SHA224 ハッシュを計算します。

"sha256"

（"sha256sum" プログラムを用いて）SHA256 ハッシュを計算します。

"sha384"

（"sha384sum" プログラムを用いて）SHA384 ハッシュを計算します。

"sha512"

（"sha512sum" プログラムを用いて）SHA512 ハッシュを計算します。

チェックサムは表示可能な文字列として返されます。

デバイスのチェックサムを取得するには "checksum-device" を使用します。

多くのファイルのチェックサムを取得するには "checksums-out" を使用します。

checksum-device¶

 checksum-device csumtype device

This call computes the MD5, SHAx or CRC checksum of the contents of the device named "device". For the types of checksums supported see the "checksum" command.

checksums-out¶

 checksums-out csumtype directory (sumsfile|-)

This command computes the checksums of all regular files in directory and then emits a list of those checksums to the local output file "sumsfile".

This can be used for verifying the integrity of a virtual machine. However to be properly secure you should pay attention to the output of the checksum command (it uses the ones from GNU coreutils). In particular when the filename is not printable, coreutils uses a special backslash syntax. For more information, see the GNU coreutils info file.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

chmod¶

 chmod mode path

Change the mode (permissions) of "path" to "mode". Only numeric modes are supported.

Note: When using this command from guestfish, "mode" by default would be decimal, unless you prefix it with 0 to get octal, ie. use 0700 not 700.

実際に設定されるモードは umask により影響されます。

chown¶

 chown owner group path

ファイルの所有者を "owner" に、グループを "group" に変更します。

Only numeric uid and gid are supported. If you want to use names, you will need to locate and parse the password file yourself (Augeas support makes this relatively easy).

clear-backend-setting¶

 clear-backend-setting name

If there is a backend setting string matching "name" or beginning with "name=", then that string is removed from the backend settings.

This call returns the number of strings which were removed (which may be 0, 1 or greater than 1).

See "BACKEND" in guestfs(3), "BACKEND SETTINGS" in guestfs(3).

command¶

 command 'arguments ...'

This call runs a command from the guest filesystem. The filesystem must be mounted, and must contain a compatible operating system (ie. something Linux, with the same or compatible processor architecture).

The single parameter is an argv-style list of arguments. The first element is the name of the program to run. Subsequent elements are parameters. The list must be non-empty (ie. must contain a program name). Note that the command runs directly, and is not invoked via the shell (see "sh").

The return value is anything printed to stdout by the command.

If the command returns a non-zero exit status, then this function returns an error message. The error message string is the content of stderr from the command.

The $PATH environment variable will contain at least /usr/bin and /bin. If you require a program from another location, you should provide the full path in the first parameter.

Shared libraries and data files required by the program must be available on filesystems which are mounted in the correct places. It is the caller’s responsibility to ensure all filesystems that are needed are mounted at the right locations.

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

command-lines¶

 command-lines 'arguments ...'

This is the same as "command", but splits the result into a list of lines.

関連項目: "sh-lines"

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

compress-device-out¶

 compress-device-out ctype device (zdevice|-) [level:N]

This command compresses "device" and writes it out to the local file "zdevice".

The "ctype" and optional "level" parameters have the same meaning as in "compress-out".

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

compress-out¶

 compress-out ctype file (zfile|-) [level:N]

This command compresses file and writes it out to the local file zfile.

The compression program used is controlled by the "ctype" parameter. Currently this includes: "compress", "gzip", "bzip2", "xz" or "lzop". Some compression types may not be supported by particular builds of libguestfs, in which case you will get an error containing the substring "not supported".

The optional "level" parameter controls compression level. The meaning and default for this parameter depends on the compression program being used.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

config¶

 config hvparam hvvalue

This can be used to add arbitrary hypervisor parameters of the form -param value. Actually it’s not quite arbitrary - we prevent you from setting some parameters which would interfere with parameters that we use.

The first character of "hvparam" string must be a "-" (dash).

"hvvalue" can be NULL.

copy-attributes¶

 copy-attributes src dest [all:true|false] [mode:true|false] [xattributes:true|false] [ownership:true|false]

Copy the attributes of a path (which can be a file or a directory) to another path.

By default "no" attribute is copied, so make sure to specify any (or "all" to copy everything).

The optional arguments specify which attributes can be copied:

"mode"

Copy part of the file mode from "source" to "destination". Only the UNIX permissions and the sticky/setuid/setgid bits can be copied.

"xattributes"

Copy the Linux extended attributes (xattrs) from "source" to "destination". This flag does nothing if the linuxxattrs feature is not available (see "feature-available").

"ownership"

Copy the owner uid and the group gid of "source" to "destination".

"all"

Copy all the attributes from "source" to "destination". Enabling it enables all the other flags, if they are not specified already.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

copy-device-to-device¶

 copy-device-to-device src dest [srcoffset:N] [destoffset:N] [size:N] [sparse:true|false] [append:true|false]

The four calls "copy-device-to-device", "copy-device-to-file", "copy-file-to-device", and "copy-file-to-file" let you copy from a source (device|file) to a destination (device|file).

Partial copies can be made since you can specify optionally the source offset, destination offset and size to copy. These values are all specified in bytes. If not given, the offsets both default to zero, and the size defaults to copying as much as possible until we hit the end of the source.

ソースと宛先は同じオブジェクトである可能性があります。しかしながら、重なり合う領域は正しくコピーされないかもしれません。

宛先がファイルならば、必要に応じて作成されます。宛先ファイルが十分に大きくなければ、拡張されます。

If the destination is a file and the "append" flag is not set, then the destination file is truncated. If the "append" flag is set, then the copy appends to the destination file. The "append" flag currently cannot be set for devices.

If the "sparse" flag is true then the call avoids writing blocks that contain only zeroes, which can help in some situations where the backing disk is thin-provisioned. Note that unless the target is already zeroed, using this option will result in incorrect copying.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

copy-device-to-file¶

 copy-device-to-file src dest [srcoffset:N] [destoffset:N] [size:N] [sparse:true|false] [append:true|false]

この呼び出しの一般的な概要は "copy-device-to-device" を参照してください。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

copy-file-to-device¶

 copy-file-to-device src dest [srcoffset:N] [destoffset:N] [size:N] [sparse:true|false] [append:true|false]

この呼び出しの一般的な概要は "copy-device-to-device" を参照してください。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

copy-file-to-file¶

 copy-file-to-file src dest [srcoffset:N] [destoffset:N] [size:N] [sparse:true|false] [append:true|false]

この呼び出しの一般的な概要は "copy-device-to-device" を参照してください。

This is not the function you want for copying files. This is for copying blocks within existing files. See "cp", "cp-a" and "mv" for general file copying and moving functions.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

copy-size¶

 copy-size src dest size

This command copies exactly "size" bytes from one source device or file "src" to another destination device or file "dest".

Note this will fail if the source is too short or if the destination is not large enough.

This function is deprecated. In new code, use the "copy-device-to-device" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

cp¶

 cp src dest

ファイルを "src" から "dest" にコピーします。ここで "dest" は宛先ファイル名または宛先ディレクトリです。

cp-a¶

 cp-a src dest

ファイルまたはディレクトリを "src" から "dest" に "cp -a" コマンドを使用して再帰的にコピーします。

cp-r¶

 cp-r src dest

This copies a file or directory from "src" to "dest" recursively using the "cp -rP" command.

Most users should use "cp-a" instead. This command is useful when you don't want to preserve permissions, because the target filesystem does not support it (primarily when writing to DOS FAT filesystems).

cpio-out¶

 cpio-out directory (cpiofile|-) [format:..]

This command packs the contents of directory and downloads it to local file "cpiofile".

The optional "format" parameter can be used to select the format. Only the following formats are currently permitted:

"newc"

New (SVR4) portable format. This format happens to be compatible with the cpio-like format used by the Linux kernel for initramfs.

This is the default format.

"crc"

New (SVR4) portable format with a checksum.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

dd¶

 dd src dest

This command copies from one source device or file "src" to another destination device or file "dest". Normally you would use this to copy to or from a device or partition, for example to duplicate a filesystem.

If the destination is a device, it must be as large or larger than the source file or device, otherwise the copy will fail. This command cannot do partial copies (see "copy-device-to-device").

This function is deprecated. In new code, use the "copy-device-to-device" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

device-index¶

 device-index device

この関数はデバイス名 (例: "/dev/sdb") を取得し、デバイスの一覧にあるデバイスのインデックスを返します。

Index numbers start from 0. The named device must exist, for example as a string returned from "list-devices".

"list-devices", "part-to-dev" 参照。

df¶

 df

このコマンドはディスク使用状況を報告するために "df" コマンドを実行します。

This command is mostly useful for interactive sessions. It is not intended that you try to parse the output string. Use "statvfs" from programs.

df-h¶

 df-h

このコマンドはディスク使用状況を読みやすい形式で報告するために "df -h" コマンドを実行します。

This command is mostly useful for interactive sessions. It is not intended that you try to parse the output string. Use "statvfs" from programs.

disk-create¶

 disk-create filename format size [backingfile:..] [backingformat:..] [preallocation:..] [compat:..] [clustersize:N]

Create a blank disk image called filename (a host file) with format "format" (usually "raw" or "qcow2"). The size is "size" bytes.

If used with the optional "backingfile" parameter, then a snapshot is created on top of the backing file. In this case, "size" must be passed as "-1". The size of the snapshot is the same as the size of the backing file, which is discovered automatically. You are encouraged to also pass "backingformat" to describe the format of "backingfile".

If filename refers to a block device, then the device is formatted. The "size" is ignored since block devices have an intrinsic size.

The other optional parameters are:

"preallocation"

If format is "raw", then this can be either "off" (or "sparse") or "full" to create a sparse or fully allocated file respectively. The default is "off".

If format is "qcow2", then this can be "off" (or "sparse"), "metadata" or "full". Preallocating metadata can be faster when doing lots of writes, but uses more space. The default is "off".

"compat"

"qcow2" only: Pass the string 1.1 to use the advanced qcow2 format supported by qemu ≥ 1.1.

"clustersize"

"qcow2" only: Change the qcow2 cluster size. The default is 65536 (bytes) and this setting may be any power of two between 512 and 2097152.

Note that this call does not add the new disk to the handle. You may need to call "add-drive-opts" separately.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

disk-format¶

 disk-format filename

Detect and return the format of the disk image called filename. filename can also be a host device, etc. If the format of the image could not be detected, then "unknown" is returned.

Note that detecting the disk format can be insecure under some circumstances. See "CVE-2010-3851" in guestfs(3).

関連項目: "ディスクイメージ形式" in guestfs(3)

disk-has-backing-file¶

 disk-has-backing-file filename

Detect and return whether the disk image filename has a backing file.

Note that detecting disk features can be insecure under some circumstances. See "CVE-2010-3851" in guestfs(3).

disk-virtual-size¶

 disk-virtual-size filename

Detect and return the virtual size in bytes of the disk image called filename.

Note that detecting disk features can be insecure under some circumstances. See "CVE-2010-3851" in guestfs(3).

dmesg¶

 dmesg

This returns the kernel messages ("dmesg" output) from the guest kernel. This is sometimes useful for extended debugging of problems.

Another way to get the same information is to enable verbose messages with "set-verbose" or by setting the environment variable "LIBGUESTFS_DEBUG=1" before running the program.

download¶

 download remotefilename (filename|-)

Download file remotefilename and save it as filename on the local machine.

filename can also be a named pipe.

"upload", "cat" 参照。

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

download-blocks¶

 download-blocks device start stop (filename|-) [unallocated:true|false]

Download the data units from start address to stop from the disk partition (eg. /dev/sda1) and save them as filename on the local machine.

The use of this API on sparse disk image formats such as QCOW, may result in large zero-filled files downloaded on the host.

The size of a data unit varies across filesystem implementations. On NTFS filesystems data units are referred as clusters while on ExtX ones they are referred as fragments.

If the optional "unallocated" flag is true (default is false), only the unallocated blocks will be extracted. This is useful to detect hidden data or to retrieve deleted files which data units have not been overwritten yet.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "sleuthkit". See also "feature-available".

download-inode¶

 download-inode device inode (filename|-)

Download a file given its inode from the disk partition (eg. /dev/sda1) and save it as filename on the local machine.

It is not required to mount the disk to run this command.

The command is capable of downloading deleted or inaccessible files.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

This command depends on the feature "sleuthkit". See also "feature-available".

download-offset¶

 download-offset remotefilename (filename|-) offset size

Download file remotefilename and save it as filename on the local machine.

remotefilename is read for "size" bytes starting at "offset" (this region must be within the file or device).

Note that there is no limit on the amount of data that can be downloaded with this call, unlike with "pread", and this call always reads the full amount unless an error occurs.

"download", "pread" 参照。

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

drop-caches¶

 drop-caches whattodrop

This instructs the guest kernel to drop its page cache, and/or dentries and inode caches. The parameter "whattodrop" tells the kernel what precisely to drop, see http://linux-mm.org/Drop_Caches

"whattodrop" を 3 に設定することにより、すべてのものを破棄します。

This automatically calls sync(2) before the operation, so that the maximum guest memory is freed.

du¶

 du path

このコマンドは "path" のファイル空間使用量を見積もるために "du -s" コマンドを実行します。

"path" can be a file or a directory. If "path" is a directory then the estimate includes the contents of the directory and all subdirectories (recursively).

結果は キロバイト (つまり 1024 バイトの単位) の見積もり容量です。

e2fsck¶

 e2fsck device [correct:true|false] [forceall:true|false]

This runs the ext2/ext3 filesystem checker on "device". It can take the following optional arguments:

"correct"

Automatically repair the file system. This option will cause e2fsck to automatically fix any filesystem problems that can be safely fixed without human intervention.

This option may not be specified at the same time as the "forceall" option.

"forceall"

Assume an answer of ‘yes’ to all questions; allows e2fsck to be used non-interactively.

このオプションは "correct" オプションと同時に指定できません。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

e2fsck-f¶

 e2fsck-f device

This runs "e2fsck -p -f device", ie. runs the ext2/ext3 filesystem checker on "device", noninteractively (-p), even if the filesystem appears to be clean (-f).

この関数は推奨されません。 新しいコードでは、代わりに "e2fsck" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

echo-daemon¶

 echo-daemon 'words ...'

This command concatenates the list of "words" passed with single spaces between them and returns the resulting string.

You can use this command to test the connection through to the daemon.

"ping-daemon" 参照。

egrep¶

 egrep regex path

これは外部の "egrep" プログラムを呼び出し、一致した行を返します。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

この関数は推奨されません。 新しいコードでは、代わりに "grep" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

egrepi¶

 egrepi regex path

これは外部の "egrep -i" プログラムを呼び出し、一致した行を返します。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

この関数は推奨されません。 新しいコードでは、代わりに "grep" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

equal¶

 equal file1 file2

This compares the two files file1 and file2 and returns true if their content is exactly equal, or false otherwise.

外部の cmp(1) プログラムが比較のために使用されます。

exists¶

 exists path

This returns "true" if and only if there is a file, directory (or anything) with the given "path" name.

"is-file", "is-dir", "stat" 参照。

extlinux¶

 extlinux directory

Install the SYSLINUX bootloader on the device mounted at directory. Unlike "syslinux" which requires a FAT filesystem, this can be used on an ext2/3/4 or btrfs filesystem.

The directory parameter can be either a mountpoint, or a directory within the mountpoint.

You also have to mark the partition as "active" ("part-set-bootable") and a Master Boot Record must be installed (eg. using "pwrite-device") on the first sector of the whole disk. The SYSLINUX package comes with some suitable Master Boot Records. See the extlinux(1) man page for further information.

Additional configuration can be supplied to SYSLINUX by placing a file called extlinux.conf on the filesystem under directory. For further information about the contents of this file, see extlinux(1).

See also "syslinux".

This command depends on the feature "extlinux". See also "feature-available".

f2fs-expand¶

 f2fs-expand device

This expands a f2fs filesystem to match the size of the underlying device.

This command depends on the feature "f2fs". See also "feature-available".

fallocate¶

 fallocate path len

This command preallocates a file (containing zero bytes) named "path" of size "len" bytes. If the file exists already, it is overwritten.

Do not confuse this with the guestfish-specific "alloc" command which allocates a file in the host and attaches it as a device.

この関数は推奨されません。 新しいコードでは、代わりに "fallocate64" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

fallocate64¶

 fallocate64 path len

This command preallocates a file (containing zero bytes) named "path" of size "len" bytes. If the file exists already, it is overwritten.

Note that this call allocates disk blocks for the file. To create a sparse file use "truncate-size" instead.

The deprecated call "fallocate" does the same, but owing to an oversight it only allowed 30 bit lengths to be specified, effectively limiting the maximum size of files created through that call to 1GB.

Do not confuse this with the guestfish-specific "alloc" and "sparse" commands which create a file in the host and attach it as a device.

feature-available¶

 feature-available 'groups ...'

This is the same as "available", but unlike that call it returns a simple true/false boolean result, instead of throwing an exception if a feature is not found. For other documentation see "available".

fgrep¶

 fgrep pattern path

This calls the external "fgrep" program and returns the matching lines.

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

この関数は推奨されません。 新しいコードでは、代わりに "grep" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

fgrepi¶

 fgrepi pattern path

外部の "fgrep -i" プログラムを呼び出し、一致した行を返します。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

この関数は推奨されません。 新しいコードでは、代わりに "grep" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

file¶

 file path

この呼び出しは、ファイルの形式または内容を決定するために、標準的な file(1) コマンドを使用します。

This call will also transparently look inside various types of compressed file.

The exact command which runs is "file -zb path". Note in particular that the filename is not prepended to the output (the -b option).

The output depends on the output of the underlying file(1) command and it can change in future in ways beyond our control. In other words, the output is not guaranteed by the ABI.

関連項目: file(1), "vfs-type", "lstat", "is-file", "is-blockdev" (etc), "is-zero"

file-architecture¶

 file-architecture filename

This detects the architecture of the binary filename, and returns it if known.

現在定義されているアーキテクチャーは次のとおりです:

"aarch64"

64 bit ARM.

"arm"

32 bit ARM.

"i386"

この文字列は、バイナリーの正確なプロセッサー要求にかかわりなく、すべての 32 ビット i386, i486, i586, i686 バイナリーに対して返されます。

"ia64"

Intel Itanium.

"ppc"

32 ビット Power PC.

"ppc64"

64 bit Power PC (big endian).

"ppc64le"

64 bit Power PC (little endian).

"riscv32"

"riscv64"

"riscv128"

RISC-V 32-, 64- or 128-bit variants.

"s390"

31 bit IBM S/390.

"s390x"

64 bit IBM S/390.

"sparc"

32 ビット SPARC.

"sparc64"

64 ビット SPARC V9 およびそれ以降.

"x86_64"

64 ビット x86-64.

libguestfs は将来他のアーキテクチャー文字列を返すかもしれません。

この関数は少なくとも以下の種類のファイルにおいて機能します:

• 多くの種類の Un*x および Linux バイナリー
• 多くの種類の Un*x および Linux 共有ライブラリー
• Windows Win32 および Win64 バイナリー
• Windows Win32 および Win64 DLL

  Win32 バイナリーと DLL が "i386" を返します。

  Win64 バイナリーと DLL が "x86_64" を返します。

• Linux カーネルモジュール
• 新形式の Linux initrd イメージ
• いくつかの非 x86 Linux vmlinuz カーネル

今のところ実行できないこと:

• 静的ライブラリー (libfoo.a)
• 圧縮された ext2 ファイルシステムとして Linux 旧形式の initrd (RHEL 3)
• x86 Linux vmlinuz カーネル

  x86 vmlinuz images (bzImage format) consist of a mix of 16-, 32- and compressed code, and are horribly hard to unpack. If you want to find the architecture of a kernel, use the architecture of the associated initrd or kernel module(s) instead.

filesize¶

 filesize file

This command returns the size of file in bytes.

ファイルに関する他の統計を取得するには use "stat", "lstat", "is-dir", "is-file" などを使用します。ブロックデバイスの容量を取得するには "blockdev-getsize64" を使用します。

filesystem-available¶

 filesystem-available filesystem

Check whether libguestfs supports the named filesystem. The argument "filesystem" is a filesystem name, such as "ext3".

このコマンドを使用する前に "launch" を呼び出す必要があります。

This is mainly useful as a negative test. If this returns true, it doesn't mean that a particular filesystem can be created or mounted, since filesystems can fail for other reasons such as it being a later version of the filesystem, or having incompatible features, or lacking the right mkfs.<fs> tool.

See also "available", "feature-available", "AVAILABILITY" in guestfs(3).

filesystem-walk¶

 filesystem-walk device

Walk through the internal structures of a disk partition (eg. /dev/sda1) in order to return a list of all the files and directories stored within.

It is not necessary to mount the disk partition to run this command.

All entries in the filesystem are returned. This function can list deleted or unaccessible files. The entries are not sorted.

The "tsk_dirent" structure contains the following fields.

"tsk_inode"

Filesystem reference number of the node. It might be 0 if the node has been deleted.

"tsk_type"

Basic file type information. See below for a detailed list of values.

"tsk_size"

File size in bytes. It might be "-1" if the node has been deleted.

"tsk_name"

The file path relative to its directory.

"tsk_flags"

Bitfield containing extra information regarding the entry. It contains the logical OR of the following values:

"tsk_atime_sec"

"tsk_atime_nsec"

"tsk_mtime_sec"

"tsk_mtime_nsec"

"tsk_ctime_sec"

"tsk_ctime_nsec"

"tsk_crtime_sec"

"tsk_crtime_nsec"

Respectively, access, modification, last status change and creation time in Unix format in seconds and nanoseconds.

"tsk_nlink"

Number of file names pointing to this entry.

"tsk_link"

If the entry is a symbolic link, this field will contain the path to the target file.

The "tsk_type" field will contain one of the following characters:

'b'

ブロック特殊

'c'

キャラクター特殊

'd'

ディレクトリ

'f'

FIFO (名前付きパイプ)

'l'

シンボリックリンク

'r'

通常のファイル

's'

ソケット

'h'

Shadow inode (Solaris)

'w'

Whiteout inode (BSD)

'u'

未知のファイル種別

This command depends on the feature "libtsk". See also "feature-available".

fill¶

 fill c len path

このコマンドは "path" という新しいファイルを作成します。初期の内容は "len" オクテットの "c" です。ここで "c" は "[0..255]" の範囲の数値である必要があります。

To fill a file with zero bytes (sparsely), it is much more efficient to use "truncate-size". To create a file with a pattern of repeating bytes use "fill-pattern".

fill-dir¶

 fill-dir dir nr

This function, useful for testing filesystems, creates "nr" empty files in the directory "dir" with names 00000000 through "nr-1" (ie. each file name is 8 digits long padded with zeroes).

fill-pattern¶

 fill-pattern pattern len path

This function is like "fill" except that it creates a new file of length "len" containing the repeating pattern of bytes in "pattern". The pattern is truncated if necessary to ensure the length of the file is exactly "len" bytes.

find¶

 find directory

This command lists out all files and directories, recursively, starting at directory. It is essentially equivalent to running the shell command "find directory -print" but some post-processing happens on the output, described below.

This returns a list of strings without any prefix. Thus if the directory structure was:

 /tmp/a
 /tmp/b
 /tmp/c/d

then the returned list from "find" /tmp would be 4 elements:

 a
 b
 c
 c/d

If directory is not a directory, then this command returns an error.

返された一覧は並び替えられています。

find0¶

 find0 directory (files|-)

This command lists out all files and directories, recursively, starting at directory, placing the resulting list in the external file called files.

This command works the same way as "find" with the following exceptions:

• The resulting list is written to an external file.
• Items (filenames) in the result are separated by "\0" characters. See find(1) option -print0.
• 結果の一覧はソートされていません。

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

find-inode¶

 find-inode device inode

Searches all the entries associated with the given inode.

For each entry, a "tsk_dirent" structure is returned. See "filesystem_walk" for more information about "tsk_dirent" structures.

This command depends on the feature "libtsk". See also "feature-available".

findfs-label¶

 findfs-label label

This command searches the filesystems and returns the one which has the given label. An error is returned if no such filesystem can be found.

ファイルシステムのラベルを検索するには "vfs-label" を使用します。

findfs-uuid¶

 findfs-uuid uuid

This command searches the filesystems and returns the one which has the given UUID. An error is returned if no such filesystem can be found.

ファイルシステムの UUID を検索するには "vfs-uuid" を使用します。

fsck¶

 fsck fstype device

This runs the filesystem checker (fsck) on "device" which should have filesystem type "fstype".

返された整数は状態です。 "fsck" からの状態コードの一覧は fsck(8) を参照してください。

注:

• 複数の状態コードが同時に合計されるかもしれません。
• A non-zero return code can mean "success", for example if errors have been corrected on the filesystem.
• Checking or repairing NTFS volumes is not supported (by linux-ntfs).

This command is entirely equivalent to running "fsck -a -t fstype device".

fstrim¶

 fstrim mountpoint [offset:N] [length:N] [minimumfreeextent:N]

Trim the free space in the filesystem mounted on "mountpoint". The filesystem must be mounted read-write.

The filesystem contents are not affected, but any free space in the filesystem is "trimmed", that is, given back to the host device, thus making disk images more sparse, allowing unused space in qcow2 files to be reused, etc.

This operation requires support in libguestfs, the mounted filesystem, the host filesystem, qemu and the host kernel. If this support isn't present it may give an error or even appear to run but do nothing.

In the case where the kernel vfs driver does not support trimming, this call will fail with errno set to "ENOTSUP". Currently this happens when trying to trim FAT filesystems.

See also "zero-free-space". That is a slightly different operation that turns free space in the filesystem into zeroes. It is valid to call "fstrim" either instead of, or after calling "zero-free-space".

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "fstrim". See also "feature-available".

get-append¶

 get-append

Return the additional kernel options which are added to the libguestfs appliance kernel command line.

"NULL" ならば、オプションが追加されません。

get-attach-method¶

 get-attach-method

Return the current backend.

See "set-backend" and "BACKEND" in guestfs(3).

This function is deprecated. In new code, use the "get-backend" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

get-autosync¶

 get-autosync

autosync フラグを取得します。

get-backend¶

 get-backend

Return the current backend.

This handle property was previously called the "attach method".

See "set-backend" and "BACKEND" in guestfs(3).

get-backend-setting¶

 get-backend-setting name

Find a backend setting string which is either "name" or begins with "name=". If "name", this returns the string "1". If "name=", this returns the part after the equals sign (which may be an empty string).

If no such setting is found, this function throws an error. The errno (see "last-errno") will be "ESRCH" in this case.

See "BACKEND" in guestfs(3), "BACKEND SETTINGS" in guestfs(3).

get-backend-settings¶

 get-backend-settings

Return the current backend settings.

This call returns all backend settings strings. If you want to find a single backend setting, see "get-backend-setting".

See "BACKEND" in guestfs(3), "BACKEND SETTINGS" in guestfs(3).

get-cachedir¶

 get-cachedir

アプライアンスのキャッシュを保存するために、ハンドルにより使用されるディレクトリーを取得します。

get-direct¶

 get-direct

Return the direct appliance mode flag.

This function is deprecated. In new code, use the "internal-get-console-socket" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

get-e2attrs¶

 get-e2attrs file

This returns the file attributes associated with file.

The attributes are a set of bits associated with each inode which affect the behaviour of the file. The attributes are returned as a string of letters (described below). The string may be empty, indicating that no file attributes are set for this file.

These attributes are only present when the file is located on an ext2/3/4 filesystem. Using this call on other filesystem types will result in an error.

The characters (file attributes) in the returned string are currently:

'A'

ファイルがアクセスされたとき、アクセス日時 (atime) を変更しません。

'a'

ファイルは追記専用です。

'c'

ファイルはディスクにおいて圧縮されます。

'D'

(ディレクトリーのみ。) このディレクトリーへの変更がディスクに同期的に書き込まれます。

'd'

The file is not a candidate for backup (see dump(8)).

'E'

ファイルは圧縮エラーがあります。

'e'

ファイルは拡張属性を使用しています。

'h'

The file is storing its blocks in units of the filesystem blocksize instead of sectors.

'I'

(ディレクトリーのみ。) ディレクトリーはハッシュツリーを使用しています。

'i'

The file is immutable. It cannot be modified, deleted or renamed. No link can be created to this file.

'j'

ファイルはジャーナル付きデータです。

's'

ファイルが削除されるとき、そのブロックはすべてゼロが書き込みされます。

'S'

このファイルへの変更は同期的にディスクに書き込まれます。

'T'

(Directories only.) This is a hint to the block allocator that subdirectories contained in this directory should be spread across blocks. If not present, the block allocator will try to group subdirectories together.

't'

For a file, this disables tail-merging. (Not used by upstream implementations of ext2.)

'u'

When the file is deleted, its blocks will be saved, allowing the file to be undeleted.

'X'

圧縮ファイルの内容にアクセスできます。

'Z'

圧縮されたファイルがダーティーです。

More file attributes may be added to this list later. Not all file attributes may be set for all kinds of files. For detailed information, consult the chattr(1) man page.

"set-e2attrs" 参照。

Don't confuse these attributes with extended attributes (see "getxattr").

get-e2generation¶

 get-e2generation file

This returns the ext2 file generation of a file. The generation (which used to be called the "version") is a number associated with an inode. This is most commonly used by NFS servers.

The generation is only present when the file is located on an ext2/3/4 filesystem. Using this call on other filesystem types will result in an error.

"set-e2generation" 参照。

get-e2label¶

 get-e2label device

これは "device" にあるファイルシステムの ext2/3/4 ファイルシステムラベルを返します。

This function is deprecated. In new code, use the "vfs-label" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

get-e2uuid¶

 get-e2uuid device

これは "device" にあるファイルシステムの ext2/3/4 ファイルシステム UUID を返します。

この関数は推奨されません。 新しいコードでは、代わりに "vfs-uuid" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

get-hv¶

 get-hv

Return the current hypervisor binary.

This is always non-NULL. If it wasn't set already, then this will return the default qemu binary name.

get-identifier¶

 get-identifier

Get the handle identifier. See "set-identifier".

get-libvirt-requested-credential-challenge¶

 get-libvirt-requested-credential-challenge index

Get the challenge (provided by libvirt) for the "index"'th requested credential. If libvirt did not provide a challenge, this returns the empty string "".

See "LIBVIRT AUTHENTICATION" in guestfs(3) for documentation and example code.

get-libvirt-requested-credential-defresult¶

 get-libvirt-requested-credential-defresult index

Get the default result (provided by libvirt) for the "index"'th requested credential. If libvirt did not provide a default result, this returns the empty string "".

See "LIBVIRT AUTHENTICATION" in guestfs(3) for documentation and example code.

get-libvirt-requested-credential-prompt¶

 get-libvirt-requested-credential-prompt index

Get the prompt (provided by libvirt) for the "index"'th requested credential. If libvirt did not provide a prompt, this returns the empty string "".

See "LIBVIRT AUTHENTICATION" in guestfs(3) for documentation and example code.

get-libvirt-requested-credentials¶

 get-libvirt-requested-credentials

This should only be called during the event callback for events of type "GUESTFS_EVENT_LIBVIRT_AUTH".

Return the list of credentials requested by libvirt. Possible values are a subset of the strings provided when you called "set-libvirt-supported-credentials".

See "LIBVIRT AUTHENTICATION" in guestfs(3) for documentation and example code.

get-memsize¶

 get-memsize

This gets the memory size in megabytes allocated to the hypervisor.

If "set-memsize" was not called on this handle, and if "LIBGUESTFS_MEMSIZE" was not set, then this returns the compiled-in default value for memsize.

libguestfs のアーキテクチャーの詳細は guestfs(3) を参照してください。

get-network¶

 get-network

これは有効化されているネットワークフラグを返します。

get-path¶

 get-path

現在の検索パスを返します。

This is always non-NULL. If it wasn't set already, then this will return the default path.

get-pgroup¶

 get-pgroup

これはプロセスグループフラグを返します。

get-pid¶

pid¶

 get-pid

Return the process ID of the hypervisor. If there is no hypervisor running, then this will return an error.

This is an internal call used for debugging and testing.

get-program¶

 get-program

Get the program name. See "set-program".

get-qemu¶

 get-qemu

Return the current hypervisor binary (usually qemu).

This is always non-NULL. If it wasn't set already, then this will return the default qemu binary name.

This function is deprecated. In new code, use the "get-hv" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

get-recovery-proc¶

 get-recovery-proc

復元プロセス有効化フラグを返します。

get-selinux¶

 get-selinux

This returns the current setting of the selinux flag which is passed to the appliance at boot time. See "set-selinux".

libguestfs のアーキテクチャーの詳細は guestfs(3) を参照してください。

This function is deprecated. In new code, use the "selinux-relabel" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

get-smp¶

 get-smp

This returns the number of virtual CPUs assigned to the appliance.

get-sockdir¶

 get-sockdir

Get the directory used by the handle to store temporary socket files.

This is different from "tmpdir", as we need shorter paths for sockets (due to the limited buffers of filenames for UNIX sockets), and "tmpdir" may be too long for them.

The environment variable "XDG_RUNTIME_DIR" controls the default value: If "XDG_RUNTIME_DIR" is set, then that is the default. Else /tmp is the default.

get-tmpdir¶

 get-tmpdir

Get the directory used by the handle to store temporary files.

get-trace¶

 get-trace

コマンドトレースフラグを返します。

get-umask¶

 get-umask

Return the current umask. By default the umask is 022 unless it has been set by calling "umask".

get-verbose¶

 get-verbose

これはメッセージ冗長化フラグを返します。

getcon¶

 getcon

これはデーモンの SELinux セキュリティコンテキストを取得します。

guestfs(3) の SELINUX および "setcon" に関するドキュメントを参照してください

This function is deprecated. In new code, use the "selinux-relabel" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

This command depends on the feature "selinux". See also "feature-available".

getxattr¶

 getxattr path name

Get a single extended attribute from file "path" named "name". This call follows symlinks. If you want to lookup an extended attribute for the symlink itself, use "lgetxattr".

Normally it is better to get all extended attributes from a file in one go by calling "getxattrs". However some Linux filesystem implementations are buggy and do not provide a way to list out attributes. For these filesystems (notably ntfs-3g) you have to know the names of the extended attributes you want in advance and call this function.

Extended attribute values are blobs of binary data. If there is no extended attribute named "name", this returns an error.

関連項目: "getxattrs", "lgetxattr", attr(5)

This command depends on the feature "linuxxattrs". See also "feature-available".

getxattrs¶

 getxattrs path

This call lists the extended attributes of the file or directory "path".

At the system call level, this is a combination of the listxattr(2) and getxattr(2) calls.

関連項目: "lgetxattrs", attr(5)

This command depends on the feature "linuxxattrs". See also "feature-available".

glob-expand¶

glob-expand-opts¶

 glob-expand pattern [directoryslash:true|false]

This command searches for all the pathnames matching "pattern" according to the wildcard expansion rules used by the shell.

If no paths match, then this returns an empty list (note: not an error).

It is just a wrapper around the C glob(3) function with flags "GLOB_MARK|GLOB_BRACE". See that manual page for more details.

"directoryslash" controls whether use the "GLOB_MARK" flag for glob(3), and it defaults to true. It can be explicitly set as off to return no trailing slashes in filenames of directories.

Notice that there is no equivalent command for expanding a device name (eg. /dev/sd*). Use "list-devices", "list-partitions" etc functions instead.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

grep¶

grep-opts¶

 grep regex path [extended:true|false] [fixed:true|false] [insensitive:true|false] [compressed:true|false]

This calls the external "grep" program and returns the matching lines.

オプションのフラグは次のとおりです:

"extended"

Use extended regular expressions. This is the same as using the -E flag.

"fixed"

Match fixed (don't use regular expressions). This is the same as using the -F flag.

"insensitive"

Match case-insensitive. This is the same as using the -i flag.

"compressed"

Use "zgrep" instead of "grep". This allows the input to be compress- or gzip-compressed.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

grepi¶

 grepi regex path

これは外部の "grep -i" プログラムを呼び出し、一致する行を返します。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

この関数は推奨されません。 新しいコードでは、代わりに "grep" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

grub-install¶

 grub-install root device

This command installs GRUB 1 (the Grand Unified Bootloader) on "device", with the root directory being "root".

注:

• There is currently no way in the API to install grub2, which is used by most modern Linux guests. It is possible to run the grub2 command from the guest, although see the caveats in "RUNNING COMMANDS" in guestfs(3).
• This uses "grub-install" from the host. Unfortunately grub is not always compatible with itself, so this only works in rather narrow circumstances. Careful testing with each guest version is advisable.
• If grub-install reports the error "No suitable drive was found in the generated device map." it may be that you need to create a /boot/grub/device.map file first that contains the mapping between grub device names and Linux device names. It is usually sufficient to create a file containing:

   (hd0) /dev/vda
      

  replacing /dev/vda with the name of the installation device.

This command depends on the feature "grub". See also "feature-available".

head¶

 head path

このコマンドは文字列の一覧として、ファイルの先頭 10 行までを返します。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

head-n¶

 head-n nrlines path

パラメーター "nrlines" が正の数ならば、これはファイル "path" の先頭 "nrlines" 行を返します。

パラメーター "nrlines" が負の数ならば、これはファイル "path" の末尾 "nrlines" 行を取り除いた行を返します。

パラメーター "nrlines" が 0 ならば、空の一覧を返します。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

hexdump¶

 hexdump path

指定された "path" において "hexdump -C" を実行します。結果は、読みやすい形式になり、ファイルの正規化された 16 進ダンプです。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

hivex-close¶

 hivex-close

現在の hivex ハンドルを閉じます。

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-commit¶

 hivex-commit filename

ハイブへの変更をコミット（書き込み）します。

If the optional filename parameter is null, then the changes are written back to the same hive that was opened. If this is not null then they are written to the alternate filename given and the original hive is left untouched.

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-node-add-child¶

 hivex-node-add-child parent name

子ノードに "name" という名前の "parent" を追加します。

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-node-children¶

 hivex-node-children nodeh

"nodeh" のサブキーであるノードの一覧を返します。

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-node-delete-child¶

 hivex-node-delete-child nodeh

"nodeh" を削除します。必要に応じて、再帰的に削除します。

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-node-get-child¶

 hivex-node-get-child nodeh name

Return the child of "nodeh" with the name "name", if it exists. This can return 0 meaning the name was not found.

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-node-get-value¶

 hivex-node-get-value nodeh key

Return the value attached to "nodeh" which has the name "key", if it exists. This can return 0 meaning the key was not found.

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-node-name¶

 hivex-node-name nodeh

"nodeh" の名前を返します。

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-node-parent¶

 hivex-node-parent nodeh

"nodeh" の親ノードを返します。

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-node-set-value¶

 hivex-node-set-value nodeh key t val

Set or replace a single value under the node "nodeh". The "key" is the name, "t" is the type, and "val" is the data.

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-node-values¶

 hivex-node-values nodeh

Return the array of (key, datatype, data) tuples attached to "nodeh".

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-open¶

 hivex-open filename [verbose:true|false] [debug:true|false] [write:true|false] [unsafe:true|false]

Open the Windows Registry hive file named filename. If there was any previous hivex handle associated with this guestfs session, then it is closed.

これは同じ名前の hivex(3) のラッパーです。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "hivex". See also "feature-available".

hivex-root¶

 hivex-root

ハイブのルートノードを返します。

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-value-key¶

 hivex-value-key valueh

(key, datatype, data) 組のキー (name) 項目を返します。

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-value-string¶

 hivex-value-string valueh

This calls "hivex-value-value" (which returns the data field from a hivex value tuple). It then assumes that the field is a UTF-16LE string and converts the result to UTF-8 (or if this is not possible, it returns an error).

This is useful for reading strings out of the Windows registry. However it is not foolproof because the registry is not strongly-typed and fields can contain arbitrary or unexpected data.

This command depends on the feature "hivex". See also "feature-available".

hivex-value-type¶

 hivex-value-type valueh

(key, datatype, data) 組の datatype 項目を返します。

これは同じ名前の hivex(3) のラッパーです。

This command depends on the feature "hivex". See also "feature-available".

hivex-value-utf8¶

 hivex-value-utf8 valueh

This calls "hivex-value-value" (which returns the data field from a hivex value tuple). It then assumes that the field is a UTF-16LE string and converts the result to UTF-8 (or if this is not possible, it returns an error).

This is useful for reading strings out of the Windows registry. However it is not foolproof because the registry is not strongly-typed and fields can contain arbitrary or unexpected data.

This function is deprecated. In new code, use the "hivex-value-string" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

This command depends on the feature "hivex". See also "feature-available".

hivex-value-value¶

 hivex-value-value valueh

(key, datatype, data) 組のデータ項目を返します。

これは同じ名前の hivex(3) のラッパーです。

関連項目: "hivex-value-utf8"

This command depends on the feature "hivex". See also "feature-available".

initrd-cat¶

 initrd-cat initrdpath filename

This command unpacks the file filename from the initrd file called initrdpath. The filename must be given without the initial / character.

For example, in guestfish you could use the following command to examine the boot script (usually called /init) contained in a Linux initrd or initramfs image:

 initrd-cat /boot/initrd-<version>.img init

"initrd-list" 参照。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

initrd-list¶

 initrd-list path

このコマンドは initrd に含まれるファイルを一覧表示します。

The files are listed without any initial / character. The files are listed in the order they appear (not necessarily alphabetical). Directory names are listed as separate items.

古い Linux カーネル (2.4 およびそれ以前) は initrd として圧縮 ext2 ファイルシステムを使用していました。新しい initramfs 形式 (圧縮 cpio ファイル) のみ をサポートします。

inotify-add-watch¶

 inotify-add-watch path mask

"mask" に一覧化されたイベントに対して "path" を監視します。

Note that if "path" is a directory then events within that directory are watched, but this does not happen recursively (in subdirectories).

Note for non-C or non-Linux callers: the inotify events are defined by the Linux kernel ABI and are listed in /usr/include/sys/inotify.h.

This command depends on the feature "inotify". See also "feature-available".

inotify-close¶

 inotify-close

This closes the inotify handle which was previously opened by inotify_init. It removes all watches, throws away any pending events, and deallocates all resources.

This command depends on the feature "inotify". See also "feature-available".

inotify-files¶

 inotify-files

This function is a helpful wrapper around "inotify-read" which just returns a list of pathnames of objects that were touched. The returned pathnames are sorted and deduplicated.

This command depends on the feature "inotify". See also "feature-available".

inotify-init¶

 inotify-init maxevents

This command creates a new inotify handle. The inotify subsystem can be used to notify events which happen to objects in the guest filesystem.

"maxevents" is the maximum number of events which will be queued up between calls to "inotify-read" or "inotify-files". If this is passed as 0, then the kernel (or previously set) default is used. For Linux 2.6.29 the default was 16384 events. Beyond this limit, the kernel throws away events, but records the fact that it threw them away by setting a flag "IN_Q_OVERFLOW" in the returned structure list (see "inotify-read").

Before any events are generated, you have to add some watches to the internal watch list. See: "inotify-add-watch" and "inotify-rm-watch".

Queued up events should be read periodically by calling "inotify-read" (or "inotify-files" which is just a helpful wrapper around "inotify-read"). If you don't read the events out often enough then you risk the internal queue overflowing.

The handle should be closed after use by calling "inotify-close". This also removes any watches automatically.

See also inotify(7) for an overview of the inotify interface as exposed by the Linux kernel, which is roughly what we expose via libguestfs. Note that there is one global inotify handle per libguestfs instance.

This command depends on the feature "inotify". See also "feature-available".

inotify-read¶

 inotify-read

Return the complete queue of events that have happened since the previous read call.

何もイベントが起きないと、これは空の一覧を返します。

Note: In order to make sure that all events have been read, you must call this function repeatedly until it returns an empty list. The reason is that the call will read events up to the maximum appliance-to-host message size and leave remaining events in the queue.

This command depends on the feature "inotify". See also "feature-available".

inotify-rm-watch¶

 inotify-rm-watch wd

前に定義された inotify ウォッチを削除します。 "inotify-add-watch" 参照。

This command depends on the feature "inotify". See also "feature-available".

inspect-get-arch¶

 inspect-get-arch root

This returns the architecture of the inspected operating system. The possible return values are listed under "file-architecture".

アーキテクチャーが決められなければ、文字列 "unknown" が返されます。

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-distro¶

 inspect-get-distro root

これは検査したオペレーティングシステムのディストリビューションを返します。

定義されているディストリビューションは現在次のとおりです:

"alpinelinux"

Alpine Linux.

"altlinux"

ALT Linux.

"archlinux"

Arch Linux.

"buildroot"

Buildroot 派生のディストリビューション. 具体的にどれかを認識しません.

"centos"

CentOS.

"cirros"

Cirros.

"coreos"

CoreOS.

"debian"

Debian.

"fedora"

Fedora.

"freebsd"

FreeBSD.

"freedos"

FreeDOS.

"frugalware"

Frugalware.

"gentoo"

Gentoo.

"kalilinux"

Kali Linux.

"linuxmint"

Linux Mint.

"mageia"

Mageia.

"mandriva"

Mandriva.

"meego"

MeeGo.

"msdos"

Microsoft DOS.

"neokylin"

NeoKylin.

"netbsd"

NetBSD.

"openbsd"

OpenBSD.

"opensuse"

OpenSUSE.

"oraclelinux"

Oracle Linux.

"pardus"

Pardus.

"pldlinux"

PLD Linux.

"redhat-based"

いくつかの Red Hat 派生ディストリビューション.

"rhel"

Red Hat Enterprise Linux.

"scientificlinux"

Scientific Linux.

"slackware"

Slackware.

"sles"

SuSE Linux Enterprise Server または Desktop.

"suse-based"

いくつかの openSuSE 派生ディストリビューション.

"ttylinux"

ttylinux.

"ubuntu"

Ubuntu.

"unknown"

ディストリビューションがわかりませんでした。

"voidlinux"

Void Linux.

"windows"

Windows はディストリビューションがありません。OS 種別が Windows ならば、この文字列は返されません。

libguestfs の将来のバージョンは、ここに他の文字列を返す可能性があります。呼び出し元はあらゆる文字列の処理に備えなければいけません。

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-drive-mappings¶

 inspect-get-drive-mappings root

This call is useful for Windows which uses a primitive system of assigning drive letters (like C:\) to partitions. This inspection API examines the Windows Registry to find out how disks/partitions are mapped to drive letters, and returns a hash table as in the example below:

 C      =>     /dev/vda2
 E      =>     /dev/vdb1
 F      =>     /dev/vdc1

Note that keys are drive letters. For Windows, the key is case insensitive and just contains the drive letter, without the customary colon separator character.

In future we may support other operating systems that also used drive letters, but the keys for those might not be case insensitive and might be longer than 1 character. For example in OS-9, hard drives were named "h0", "h1" etc.

For Windows guests, currently only hard drive mappings are returned. Removable disks (eg. DVD-ROMs) are ignored.

For guests that do not use drive mappings, or if the drive mappings could not be determined, this returns an empty hash table.

Please read "INSPECTION" in guestfs(3) for more details. See also "inspect-get-mountpoints", "inspect-get-filesystems".

inspect-get-filesystems¶

 inspect-get-filesystems root

This returns a list of all the filesystems that we think are associated with this operating system. This includes the root filesystem, other ordinary filesystems, and non-mounted devices like swap partitions.

In the case of a multi-boot virtual machine, it is possible for a filesystem to be shared between operating systems.

詳細は "INSPECTION" in guestfs(3) を読んでください。 "inspect-get-mountpoints" 参照。

inspect-get-format¶

 inspect-get-format root

Before libguestfs 1.38, there was some unreliable support for detecting installer CDs. This API would return:

"installed"

インストールされているオペレーティングシステムです。

"installer"

検査されるディスクイメージが、インストールされたオペレーティング・システムではなく、ブート可能な インストールディスク、ライブ CD、または似たようなものです。

"unknown"

このディスクイメージの形式は不明です。

In libguestfs ≥ 1.38, this only returns "installed". Use libosinfo directly to detect installer CDs.

詳細は "INSPECTION" in guestfs(3) を参照してください。

This function is deprecated. There is no replacement. Consult the API documentation in guestfs(3) for further information.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

inspect-get-hostname¶

 inspect-get-hostname root

This function returns the hostname of the operating system as found by inspection of the guest’s configuration files.

If the hostname could not be determined, then the string "unknown" is returned.

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-icon¶

 inspect-get-icon root [favicon:true|false] [highquality:true|false]

This function returns an icon corresponding to the inspected operating system. The icon is returned as a buffer containing a PNG image (re-encoded to PNG if necessary).

If it was not possible to get an icon this function returns a zero-length (non-NULL) buffer. Callers must check for this case.

Libguestfs will start by looking for a file called /etc/favicon.png or C:\etc\favicon.png and if it has the correct format, the contents of this file will be returned. You can disable favicons by passing the optional "favicon" boolean as false (default is true).

If finding the favicon fails, then we look in other places in the guest for a suitable icon.

If the optional "highquality" boolean is true then only high quality icons are returned, which means only icons of high resolution with an alpha channel. The default (false) is to return any icon we can, even if it is of substandard quality.

注:

• Unlike most other inspection API calls, the guest’s disks must be mounted up before you call this, since it needs to read information from the guest filesystem during the call.
• Security: The icon data comes from the untrusted guest, and should be treated with caution. PNG files have been known to contain exploits. Ensure that libpng (or other relevant libraries) are fully up to date before trying to process or display the icon.
• The PNG image returned can be any size. It might not be square. Libguestfs tries to return the largest, highest quality icon available. The application must scale the icon to the required size.
• Extracting icons from Windows guests requires the external "wrestool" program from the "icoutils" package, and several programs ("bmptopnm", "pnmtopng", "pamcut") from the "netpbm" package. These must be installed separately.
• Operating system icons are usually trademarks. Seek legal advice before using trademarks in applications.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

inspect-get-major-version¶

 inspect-get-major-version root

This returns the major version number of the inspected operating system.

Windows uses a consistent versioning scheme which is not reflected in the popular public names used by the operating system. Notably the operating system known as "Windows 7" is really version 6.1 (ie. major = 6, minor = 1). You can find out the real versions corresponding to releases of Windows by consulting Wikipedia or MSDN.

If the version could not be determined, then 0 is returned.

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-minor-version¶

 inspect-get-minor-version root

検査するオペレーティングシステムのマイナーバージョン番号を返します。

If the version could not be determined, then 0 is returned.

詳細は "INSPECTION" in guestfs(3) を読んでください。 "inspect-get-major-version" 参照。

inspect-get-mountpoints¶

 inspect-get-mountpoints root

This returns a hash of where we think the filesystems associated with this operating system should be mounted. Callers should note that this is at best an educated guess made by reading configuration files such as /etc/fstab. In particular note that this may return filesystems which are non-existent or not mountable and callers should be prepared to handle or ignore failures if they try to mount them.

Each element in the returned hashtable has a key which is the path of the mountpoint (eg. /boot) and a value which is the filesystem that would be mounted there (eg. /dev/sda1).

Non-mounted devices such as swap devices are not returned in this list.

For operating systems like Windows which still use drive letters, this call will only return an entry for the first drive "mounted on" /. For information about the mapping of drive letters to partitions, see "inspect-get-drive-mappings".

詳細は "INSPECTION" in guestfs(3) を読んでください。 "inspect-get-filesystems" 参照。

inspect-get-osinfo¶

 inspect-get-osinfo root

This function returns a possible short ID for libosinfo corresponding to the guest.

Note: The returned ID is only a guess by libguestfs, and nothing ensures that it actually exists in osinfo-db.

If no ID could not be determined, then the string "unknown" is returned.

inspect-get-package-format¶

 inspect-get-package-format root

This function and "inspect-get-package-management" return the package format and package management tool used by the inspected operating system. For example for Fedora these functions would return "rpm" (package format), and "yum" or "dnf" (package management).

This returns the string "unknown" if we could not determine the package format or if the operating system does not have a real packaging system (eg. Windows).

Possible strings include: "rpm", "deb", "ebuild", "pisi", "pacman", "pkgsrc", "apk", "xbps". Future versions of libguestfs may return other strings.

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-package-management¶

 inspect-get-package-management root

"inspect-get-package-format" and this function return the package format and package management tool used by the inspected operating system. For example for Fedora these functions would return "rpm" (package format), and "yum" or "dnf" (package management).

This returns the string "unknown" if we could not determine the package management tool or if the operating system does not have a real packaging system (eg. Windows).

Possible strings include: "yum", "dnf", "up2date", "apt" (for all Debian derivatives), "portage", "pisi", "pacman", "urpmi", "zypper", "apk", "xbps". Future versions of libguestfs may return other strings.

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-product-name¶

 inspect-get-product-name root

This returns the product name of the inspected operating system. The product name is generally some freeform string which can be displayed to the user, but should not be parsed by programs.

If the product name could not be determined, then the string "unknown" is returned.

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-product-variant¶

 inspect-get-product-variant root

This returns the product variant of the inspected operating system.

For Windows guests, this returns the contents of the Registry key "HKLM\Software\Microsoft\Windows NT\CurrentVersion" "InstallationType" which is usually a string such as "Client" or "Server" (other values are possible). This can be used to distinguish consumer and enterprise versions of Windows that have the same version number (for example, Windows 7 and Windows 2008 Server are both version 6.1, but the former is "Client" and the latter is "Server").

For enterprise Linux guests, in future we intend this to return the product variant such as "Desktop", "Server" and so on. But this is not implemented at present.

If the product variant could not be determined, then the string "unknown" is returned.

Please read "INSPECTION" in guestfs(3) for more details. See also "inspect-get-product-name", "inspect-get-major-version".

inspect-get-roots¶

 inspect-get-roots

This function is a convenient way to get the list of root devices, as returned from a previous call to "inspect-os", but without redoing the whole inspection process.

This returns an empty list if either no root devices were found or the caller has not called "inspect-os".

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-type¶

 inspect-get-type root

This returns the type of the inspected operating system. Currently defined types are:

"linux"

すべての Linux ベースのオペレーティングシステム.

"windows"

すべての Microsoft Windows オペレーティングシステム.

"freebsd"

FreeBSD.

"netbsd"

NetBSD.

"openbsd"

OpenBSD.

"hurd"

GNU/Hurd.

"dos"

MS-DOS, FreeDOS およびその他.

"minix"

MINIX.

"unknown"

オペレーティング・システムの種類がわかりませんでした。

libguestfs の将来のバージョンは、ここに他の文字列を返す可能性があります。呼び出し元はあらゆる文字列の処理に備えなければいけません。

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-windows-current-control-set¶

 inspect-get-windows-current-control-set root

これは検査した仮想マシンの Windows CurrentControlSet を返します。 CurrentControlSet は "ControlSet001" のようなレジストリキーの名前です。

この呼び出しは、仮想マシンが Windows であり、レジストリが検査により確認できることを仮定しています。該当しない場合、エラーが返されます。

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-windows-software-hive¶

 inspect-get-windows-software-hive root

This returns the path to the hive (binary Windows Registry file) corresponding to HKLM\SOFTWARE.

This call assumes that the guest is Windows and that the guest has a software hive file with the right name. If this is not the case then an error is returned. This call does not check that the hive is a valid Windows Registry hive.

You can use "hivex-open" to read or write to the hive.

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-windows-system-hive¶

 inspect-get-windows-system-hive root

This returns the path to the hive (binary Windows Registry file) corresponding to HKLM\SYSTEM.

This call assumes that the guest is Windows and that the guest has a system hive file with the right name. If this is not the case then an error is returned. This call does not check that the hive is a valid Windows Registry hive.

You can use "hivex-open" to read or write to the hive.

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-get-windows-systemroot¶

 inspect-get-windows-systemroot root

This returns the Windows systemroot of the inspected guest. The systemroot is a directory path such as /WINDOWS.

This call assumes that the guest is Windows and that the systemroot could be determined by inspection. If this is not the case then an error is returned.

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-is-live¶

 inspect-is-live root

This is deprecated and always returns "false".

詳細は "INSPECTION" in guestfs(3) を参照してください。

This function is deprecated. There is no replacement. Consult the API documentation in guestfs(3) for further information.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

inspect-is-multipart¶

 inspect-is-multipart root

This is deprecated and always returns "false".

詳細は "INSPECTION" in guestfs(3) を参照してください。

This function is deprecated. There is no replacement. Consult the API documentation in guestfs(3) for further information.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

inspect-is-netinst¶

 inspect-is-netinst root

This is deprecated and always returns "false".

詳細は "INSPECTION" in guestfs(3) を参照してください。

This function is deprecated. There is no replacement. Consult the API documentation in guestfs(3) for further information.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

inspect-list-applications¶

 inspect-list-applications root

Return the list of applications installed in the operating system.

Note: This call works differently from other parts of the inspection API. You have to call "inspect-os", then "inspect-get-mountpoints", then mount up the disks, before calling this. Listing applications is a significantly more difficult operation which requires access to the full filesystem. Also note that unlike the other "inspect-get-*" calls which are just returning data cached in the libguestfs handle, this call actually reads parts of the mounted filesystems during the call.

This returns an empty list if the inspection code was not able to determine the list of applications.

The application structure contains the following fields:

"app_name"

アプリケーションの名前。 Red Hat 派生および Debian 派生の Linux 仮想マシンの場合、パッケージ名になります。

"app_display_name"

The display name of the application, sometimes localized to the install language of the guest operating system.

If unavailable this is returned as an empty string "". Callers needing to display something can use "app_name" instead.

"app_epoch"

For package managers which use epochs, this contains the epoch of the package (an integer). If unavailable, this is returned as 0.

"app_version"

The version string of the application or package. If unavailable this is returned as an empty string "".

"app_release"

The release string of the application or package, for package managers that use this. If unavailable this is returned as an empty string "".

"app_install_path"

The installation path of the application (on operating systems such as Windows which use installation paths). This path is in the format used by the guest operating system, it is not a libguestfs path.

If unavailable this is returned as an empty string "".

"app_trans_path"

The install path translated into a libguestfs path. If unavailable this is returned as an empty string "".

"app_publisher"

The name of the publisher of the application, for package managers that use this. If unavailable this is returned as an empty string "".

"app_url"

The URL (eg. upstream URL) of the application. If unavailable this is returned as an empty string "".

"app_source_package"

For packaging systems which support this, the name of the source package. If unavailable this is returned as an empty string "".

"app_summary"

A short (usually one line) description of the application or package. If unavailable this is returned as an empty string "".

"app_description"

A longer description of the application or package. If unavailable this is returned as an empty string "".

詳細は "INSPECTION" in guestfs(3) を参照してください。

This function is deprecated. In new code, use the "inspect-list-applications2" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

inspect-list-applications2¶

 inspect-list-applications2 root

Return the list of applications installed in the operating system.

Note: This call works differently from other parts of the inspection API. You have to call "inspect-os", then "inspect-get-mountpoints", then mount up the disks, before calling this. Listing applications is a significantly more difficult operation which requires access to the full filesystem. Also note that unlike the other "inspect-get-*" calls which are just returning data cached in the libguestfs handle, this call actually reads parts of the mounted filesystems during the call.

This returns an empty list if the inspection code was not able to determine the list of applications.

The application structure contains the following fields:

"app2_name"

アプリケーションの名前。 Red Hat 派生および Debian 派生の Linux 仮想マシンの場合、パッケージ名になります。

"app2_display_name"

The display name of the application, sometimes localized to the install language of the guest operating system.

If unavailable this is returned as an empty string "". Callers needing to display something can use "app2_name" instead.

"app2_epoch"

For package managers which use epochs, this contains the epoch of the package (an integer). If unavailable, this is returned as 0.

"app2_version"

The version string of the application or package. If unavailable this is returned as an empty string "".

"app2_release"

The release string of the application or package, for package managers that use this. If unavailable this is returned as an empty string "".

"app2_arch"

The architecture string of the application or package, for package managers that use this. If unavailable this is returned as an empty string "".

"app2_install_path"

The installation path of the application (on operating systems such as Windows which use installation paths). This path is in the format used by the guest operating system, it is not a libguestfs path.

If unavailable this is returned as an empty string "".

"app2_trans_path"

The install path translated into a libguestfs path. If unavailable this is returned as an empty string "".

"app2_publisher"

The name of the publisher of the application, for package managers that use this. If unavailable this is returned as an empty string "".

"app2_url"

The URL (eg. upstream URL) of the application. If unavailable this is returned as an empty string "".

"app2_source_package"

For packaging systems which support this, the name of the source package. If unavailable this is returned as an empty string "".

"app2_summary"

A short (usually one line) description of the application or package. If unavailable this is returned as an empty string "".

"app2_description"

A longer description of the application or package. If unavailable this is returned as an empty string "".

詳細は "INSPECTION" in guestfs(3) を参照してください。

inspect-os¶

 inspect-os

This function uses other libguestfs functions and certain heuristics to inspect the disk(s) (usually disks belonging to a virtual machine), looking for operating systems.

The list returned is empty if no operating systems were found.

If one operating system was found, then this returns a list with a single element, which is the name of the root filesystem of this operating system. It is also possible for this function to return a list containing more than one element, indicating a dual-boot or multi-boot virtual machine, with each element being the root filesystem of one of the operating systems.

You can pass the root string(s) returned to other "inspect-get-*" functions in order to query further information about each operating system, such as the name and version.

This function uses other libguestfs features such as "mount-ro" and "umount-all" in order to mount and unmount filesystems and look at the contents. This should be called with no disks currently mounted. The function may also use Augeas, so any existing Augeas handle will be closed.

This function cannot decrypt encrypted disks. The caller must do that first (supplying the necessary keys) if the disk is encrypted.

詳細は "INSPECTION" in guestfs(3) を参照してください。

"list-filesystems" 参照。

is-blockdev¶

is-blockdev-opts¶

 is-blockdev path [followsymlinks:true|false]

与えられた"パス"名を持つブロックデバイスがあれば、"真"を返します。

If the optional flag "followsymlinks" is true, then a symlink (or chain of symlinks) that ends with a block device also causes the function to return true.

This call only looks at files within the guest filesystem. Libguestfs partitions and block devices (eg. /dev/sda) cannot be used as the "path" parameter of this call.

"stat" 参照。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

is-chardev¶

is-chardev-opts¶

 is-chardev path [followsymlinks:true|false]

This returns "true" if and only if there is a character device with the given "path" name.

If the optional flag "followsymlinks" is true, then a symlink (or chain of symlinks) that ends with a chardev also causes the function to return true.

"stat" 参照。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

is-config¶

 is-config

This returns true iff this handle is being configured (in the "CONFIG" state).

For more information on states, see guestfs(3).

is-dir¶

is-dir-opts¶

 is-dir path [followsymlinks:true|false]

This returns "true" if and only if there is a directory with the given "path" name. Note that it returns false for other objects like files.

If the optional flag "followsymlinks" is true, then a symlink (or chain of symlinks) that ends with a directory also causes the function to return true.

"stat" 参照。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

is-fifo¶

is-fifo-opts¶

 is-fifo path [followsymlinks:true|false]

This returns "true" if and only if there is a FIFO (named pipe) with the given "path" name.

If the optional flag "followsymlinks" is true, then a symlink (or chain of symlinks) that ends with a FIFO also causes the function to return true.

"stat" 参照。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

is-file¶

is-file-opts¶

 is-file path [followsymlinks:true|false]

This returns "true" if and only if there is a regular file with the given "path" name. Note that it returns false for other objects like directories.

If the optional flag "followsymlinks" is true, then a symlink (or chain of symlinks) that ends with a file also causes the function to return true.

"stat" 参照。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

is-lv¶

 is-lv mountable

This command tests whether "mountable" is a logical volume, and returns true iff this is the case.

is-socket¶

is-socket-opts¶

 is-socket path [followsymlinks:true|false]

This returns "true" if and only if there is a Unix domain socket with the given "path" name.

If the optional flag "followsymlinks" is true, then a symlink (or chain of symlinks) that ends with a socket also causes the function to return true.

"stat" 参照。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

is-symlink¶

 is-symlink path

This returns "true" if and only if there is a symbolic link with the given "path" name.

"stat" 参照。

is-whole-device¶

 is-whole-device device

This returns "true" if and only if "device" refers to a whole block device. That is, not a partition or a logical device.

is-zero¶

 is-zero path

This returns true iff the file exists and the file is empty or it contains all zero bytes.

is-zero-device¶

 is-zero-device device

This returns true iff the device exists and contains all zero bytes.

Note that for large devices this can take a long time to run.

isoinfo¶

 isoinfo isofile

This is the same as "isoinfo-device" except that it works for an ISO file located inside some other mounted filesystem. Note that in the common case where you have added an ISO file as a libguestfs device, you would not call this. Instead you would call "isoinfo-device".

isoinfo-device¶

 isoinfo-device device

"device" is an ISO device. This returns a struct of information read from the primary volume descriptor (the ISO equivalent of the superblock) of the device.

Usually it is more efficient to use the isoinfo(1) command with the -d option on the host to analyze ISO files, instead of going through libguestfs.

プライマリーボリューム記述子の項目に関する詳細は、 http://wiki.osdev.org/ISO_9660#The_Primary_Volume_Descriptor を参照してください。

journal-close¶

 journal-close

Close the journal handle.

This command depends on the feature "journal". See also "feature-available".

journal-get¶

 journal-get

Read the current journal entry. This returns all the fields in the journal as a set of "(attrname, attrval)" pairs. The "attrname" is the field name (a string).

The "attrval" is the field value (a binary blob, often but not always a string). Please note that "attrval" is a byte array, not a \0-terminated C string.

The length of data may be truncated to the data threshold (see: "journal-set-data-threshold", "journal-get-data-threshold").

If you set the data threshold to unlimited (0) then this call can read a journal entry of any size, ie. it is not limited by the libguestfs protocol.

This command depends on the feature "journal". See also "feature-available".

journal-get-data-threshold¶

 journal-get-data-threshold

Get the current data threshold for reading journal entries. This is a hint to the journal that it may truncate data fields to this size when reading them (note also that it may not truncate them). If this returns 0, then the threshold is unlimited.

See also "journal-set-data-threshold".

This command depends on the feature "journal". See also "feature-available".

journal-get-realtime-usec¶

 journal-get-realtime-usec

Get the realtime (wallclock) timestamp of the current journal entry.

This command depends on the feature "journal". See also "feature-available".

journal-next¶

 journal-next

Move to the next journal entry. You have to call this at least once after opening the handle before you are able to read data.

The returned boolean tells you if there are any more journal records to read. "true" means you can read the next record (eg. using "journal-get"), and "false" means you have reached the end of the journal.

This command depends on the feature "journal". See also "feature-available".

journal-open¶

 journal-open directory

Open the systemd journal located in directory. Any previously opened journal handle is closed.

The contents of the journal can be read using "journal-next" and "journal-get".

After you have finished using the journal, you should close the handle by calling "journal-close".

This command depends on the feature "journal". See also "feature-available".

journal-set-data-threshold¶

 journal-set-data-threshold threshold

Set the data threshold for reading journal entries. This is a hint to the journal that it may truncate data fields to this size when reading them (note also that it may not truncate them). If you set this to 0, then the threshold is unlimited.

See also "journal-get-data-threshold".

This command depends on the feature "journal". See also "feature-available".

journal-skip¶

 journal-skip skip

Skip forwards ("skip ≥ 0") or backwards ("skip < 0") in the journal.

The number of entries actually skipped is returned (note "rskip ≥ 0"). If this is not the same as the absolute value of the skip parameter ("|skip|") you passed in then it means you have reached the end or the start of the journal.

This command depends on the feature "journal". See also "feature-available".

kill-subprocess¶

 kill-subprocess

This kills the hypervisor.

これを呼び出さないでください。代わりに "shutdown" を参照してください。

この関数は推奨されません。 新しいコードでは、代わりに "shutdown" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

launch¶

run¶

 launch

You should call this after configuring the handle (eg. adding drives) but before performing any actions.

Do not call "launch" twice on the same handle. Although it will not give an error (for historical reasons), the precise behaviour when you do this is not well defined. Handles are very cheap to create, so create a new one for each launch.

lchown¶

 lchown owner group path

Change the file owner to "owner" and group to "group". This is like "chown" but if "path" is a symlink then the link itself is changed, not the target.

Only numeric uid and gid are supported. If you want to use names, you will need to locate and parse the password file yourself (Augeas support makes this relatively easy).

ldmtool-create-all¶

 ldmtool-create-all

This function scans all block devices looking for Windows dynamic disk volumes and partitions, and creates devices for any that were found.

Call "list-ldm-volumes" and "list-ldm-partitions" to return all devices.

Note that you don't normally need to call this explicitly, since it is done automatically at "launch" time. However you might want to call this function if you have hotplugged disks or have just created a Windows dynamic disk.

This command depends on the feature "ldm". See also "feature-available".

ldmtool-diskgroup-disks¶

 ldmtool-diskgroup-disks diskgroup

Return the disks in a Windows dynamic disk group. The "diskgroup" parameter should be the GUID of a disk group, one element from the list returned by "ldmtool-scan".

This command depends on the feature "ldm". See also "feature-available".

ldmtool-diskgroup-name¶

 ldmtool-diskgroup-name diskgroup

Return the name of a Windows dynamic disk group. The "diskgroup" parameter should be the GUID of a disk group, one element from the list returned by "ldmtool-scan".

This command depends on the feature "ldm". See also "feature-available".

ldmtool-diskgroup-volumes¶

 ldmtool-diskgroup-volumes diskgroup

Return the volumes in a Windows dynamic disk group. The "diskgroup" parameter should be the GUID of a disk group, one element from the list returned by "ldmtool-scan".

This command depends on the feature "ldm". See also "feature-available".

ldmtool-remove-all¶

 ldmtool-remove-all

This is essentially the opposite of "ldmtool-create-all". It removes the device mapper mappings for all Windows dynamic disk volumes

This command depends on the feature "ldm". See also "feature-available".

ldmtool-scan¶

 ldmtool-scan

This function scans for Windows dynamic disks. It returns a list of identifiers (GUIDs) for all disk groups that were found. These identifiers can be passed to other "ldmtool-*" functions.

This function scans all block devices. To scan a subset of block devices, call "ldmtool-scan-devices" instead.

This command depends on the feature "ldm". See also "feature-available".

ldmtool-scan-devices¶

 ldmtool-scan-devices 'devices ...'

This function scans for Windows dynamic disks. It returns a list of identifiers (GUIDs) for all disk groups that were found. These identifiers can be passed to other "ldmtool-*" functions.

The parameter "devices" is a list of block devices which are scanned. If this list is empty, all block devices are scanned.

This command depends on the feature "ldm". See also "feature-available".

ldmtool-volume-hint¶

 ldmtool-volume-hint diskgroup volume

Return the hint field of the volume named "volume" in the disk group with GUID "diskgroup". This may not be defined, in which case the empty string is returned. The hint field is often, though not always, the name of a Windows drive, eg. "E:".

This command depends on the feature "ldm". See also "feature-available".

ldmtool-volume-partitions¶

 ldmtool-volume-partitions diskgroup volume

Return the list of partitions in the volume named "volume" in the disk group with GUID "diskgroup".

This command depends on the feature "ldm". See also "feature-available".

ldmtool-volume-type¶

 ldmtool-volume-type diskgroup volume

Return the type of the volume named "volume" in the disk group with GUID "diskgroup".

Possible volume types that can be returned here include: "simple", "spanned", "striped", "mirrored", "raid5". Other types may also be returned.

This command depends on the feature "ldm". See also "feature-available".

lgetxattr¶

 lgetxattr path name

Get a single extended attribute from file "path" named "name". If "path" is a symlink, then this call returns an extended attribute from the symlink.

Normally it is better to get all extended attributes from a file in one go by calling "getxattrs". However some Linux filesystem implementations are buggy and do not provide a way to list out attributes. For these filesystems (notably ntfs-3g) you have to know the names of the extended attributes you want in advance and call this function.

Extended attribute values are blobs of binary data. If there is no extended attribute named "name", this returns an error.

関連項目: "lgetxattrs", "getxattr", attr(5)

This command depends on the feature "linuxxattrs". See also "feature-available".

lgetxattrs¶

 lgetxattrs path

This is the same as "getxattrs", but if "path" is a symbolic link, then it returns the extended attributes of the link itself.

This command depends on the feature "linuxxattrs". See also "feature-available".

list-9p¶

 list-9p

List all 9p filesystems attached to the guest. A list of mount tags is returned.

list-devices¶

 list-devices

すべてのブロックデバイスを一覧表示します。

The full block device names are returned, eg. /dev/sda.

"list-filesystems" 参照。

list-disk-labels¶

 list-disk-labels

If you add drives using the optional "label" parameter of "add-drive-opts", you can use this call to map between disk labels, and raw block device and partition names (like /dev/sda and /dev/sda1).

This returns a hashtable, where keys are the disk labels (without the /dev/disk/guestfs prefix), and the values are the full raw block device and partition names (eg. /dev/sda and /dev/sda1).

list-dm-devices¶

 list-dm-devices

すべてのデバイスマッパーデバイスを一覧表示します。

The returned list contains /dev/mapper/* devices, eg. ones created by a previous call to "luks-open".

Device mapper devices which correspond to logical volumes are not returned in this list. Call "lvs" if you want to list logical volumes.

list-filesystems¶

 list-filesystems

This inspection command looks for filesystems on partitions, block devices and logical volumes, returning a list of "mountables" containing filesystems and their type.

The return value is a hash, where the keys are the devices containing filesystems, and the values are the filesystem types. For example:

 "/dev/sda1" => "ntfs"
 "/dev/sda2" => "ext2"
 "/dev/vg_guest/lv_root" => "ext4"
 "/dev/vg_guest/lv_swap" => "swap"

The key is not necessarily a block device. It may also be an opaque ‘mountable’ string which can be passed to "mount".

The value can have the special value "unknown", meaning the content of the device is undetermined or empty. "swap" means a Linux swap partition.

In libguestfs ≤ 1.36 this command ran other libguestfs commands, which might have included "mount" and "umount", and therefore you had to use this soon after launch and only when nothing else was mounted. This restriction is removed in libguestfs ≥ 1.38.

Not all of the filesystems returned will be mountable. In particular, swap partitions are returned in the list. Also this command does not check that each filesystem found is valid and mountable, and some filesystems might be mountable but require special options. Filesystems may not all belong to a single logical operating system (use "inspect-os" to look for OSes).

list-ldm-partitions¶

 list-ldm-partitions

This function returns all Windows dynamic disk partitions that were found at launch time. It returns a list of device names.

This command depends on the feature "ldm". See also "feature-available".

list-ldm-volumes¶

 list-ldm-volumes

This function returns all Windows dynamic disk volumes that were found at launch time. It returns a list of device names.

This command depends on the feature "ldm". See also "feature-available".

list-md-devices¶

 list-md-devices

すべての Linux md デバイスを一覧表示します。

list-partitions¶

 list-partitions

List all the partitions detected on all block devices.

The full partition device names are returned, eg. /dev/sda1

これは論理ボリュームを返しません。 そのためには "lvs" を呼び出す必要があります。

"list-filesystems" 参照。

ll¶

 ll directory

List the files in directory (relative to the root directory, there is no cwd) in the format of 'ls -la'.

このコマンドはほとんどの対話式セッションのために有用です。出力文字列を構文解析しようという意図はありません。

llz¶

 llz directory

List the files in directory in the format of 'ls -laZ'.

このコマンドはほとんどの対話式セッションのために有用です。出力文字列を構文解析しようという意図はありません。

This function is deprecated. In new code, use the "lgetxattrs" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

ln¶

 ln target linkname

このコマンドは "ln" コマンドを使用してハードリンクを作成します。

ln-f¶

 ln-f target linkname

This command creates a hard link using the "ln -f" command. The -f option removes the link ("linkname") if it exists already.

ln-s¶

 ln-s target linkname

このコマンドは "ln -s" コマンドを使用してシンボリックリンクを作成します。

ln-sf¶

 ln-sf target linkname

This command creates a symbolic link using the "ln -sf" command, The -f option removes the link ("linkname") if it exists already.

lremovexattr¶

 lremovexattr xattr path

This is the same as "removexattr", but if "path" is a symbolic link, then it removes an extended attribute of the link itself.

This command depends on the feature "linuxxattrs". See also "feature-available".

ls¶

 ls directory

List the files in directory (relative to the root directory, there is no cwd). The '.' and '..' entries are not returned, but hidden files are shown.

ls0¶

 ls0 dir (filenames|-)

This specialized command is used to get a listing of the filenames in the directory "dir". The list of filenames is written to the local file filenames (on the host).

出力ファイルにおいて、ファイル名が "\0" 文字により区切られます。

"." および ".." は返されません。ファイル名は並べ替えられません。

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

lsetxattr¶

 lsetxattr xattr val vallen path

This is the same as "setxattr", but if "path" is a symbolic link, then it sets an extended attribute of the link itself.

This command depends on the feature "linuxxattrs". See also "feature-available".

lstat¶

 lstat path

与えられた "path" のファイル情報を返します。

This is the same as "stat" except that if "path" is a symbolic link, then the link is stat-ed, not the file it refers to.

This is the same as the lstat(2) system call.

This function is deprecated. In new code, use the "lstatns" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

lstatlist¶

 lstatlist path 'names ...'

This call allows you to perform the "lstat" operation on multiple files, where all files are in the directory "path". "names" is the list of files from this directory.

On return you get a list of stat structs, with a one-to-one correspondence to the "names" list. If any name did not exist or could not be lstat'd, then the "st_ino" field of that structure is set to "-1".

This call is intended for programs that want to efficiently list a directory contents without making many round-trips. See also "lxattrlist" for a similarly efficient call for getting extended attributes.

This function is deprecated. In new code, use the "lstatnslist" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

lstatns¶

 lstatns path

与えられた "path" のファイル情報を返します。

This is the same as "statns" except that if "path" is a symbolic link, then the link is stat-ed, not the file it refers to.

This is the same as the lstat(2) system call.

lstatnslist¶

 lstatnslist path 'names ...'

This call allows you to perform the "lstatns" operation on multiple files, where all files are in the directory "path". "names" is the list of files from this directory.

On return you get a list of stat structs, with a one-to-one correspondence to the "names" list. If any name did not exist or could not be lstat'd, then the "st_ino" field of that structure is set to "-1".

This call is intended for programs that want to efficiently list a directory contents without making many round-trips. See also "lxattrlist" for a similarly efficient call for getting extended attributes.

luks-add-key¶

 luks-add-key device keyslot

This command adds a new key on LUKS device "device". "key" is any existing key, and is used to access the device. "newkey" is the new key to add. "keyslot" is the key slot that will be replaced.

Note that if "keyslot" already contains a key, then this command will fail. You have to use "luks-kill-slot" first to remove that key.

This command has one or more key or passphrase parameters. Guestfish will prompt for these separately.

This command depends on the feature "luks". See also "feature-available".

luks-close¶

 luks-close device

This closes a LUKS device that was created earlier by "luks-open" or "luks-open-ro". The "device" parameter must be the name of the LUKS mapping device (ie. /dev/mapper/mapname) and not the name of the underlying block device.

This command depends on the feature "luks". See also "feature-available".

luks-format¶

 luks-format device keyslot

This command erases existing data on "device" and formats the device as a LUKS encrypted device. "key" is the initial key, which is added to key slot "slot". (LUKS supports 8 key slots, numbered 0-7).

This command has one or more key or passphrase parameters. Guestfish will prompt for these separately.

This command depends on the feature "luks". See also "feature-available".

luks-format-cipher¶

 luks-format-cipher device keyslot cipher

This command is the same as "luks-format" but it also allows you to set the "cipher" used.

This command has one or more key or passphrase parameters. Guestfish will prompt for these separately.

This command depends on the feature "luks". See also "feature-available".

luks-kill-slot¶

 luks-kill-slot device keyslot

This command deletes the key in key slot "keyslot" from the encrypted LUKS device "device". "key" must be one of the other keys.

This command has one or more key or passphrase parameters. Guestfish will prompt for these separately.

This command depends on the feature "luks". See also "feature-available".

luks-open¶

 luks-open device mapname

This command opens a block device which has been encrypted according to the Linux Unified Key Setup (LUKS) standard.

"device" is the encrypted block device or partition.

The caller must supply one of the keys associated with the LUKS block device, in the "key" parameter.

This creates a new block device called /dev/mapper/mapname. Reads and writes to this block device are decrypted from and encrypted to the underlying "device" respectively.

If this block device contains LVM volume groups, then calling "lvm-scan" with the "activate" parameter "true" will make them visible.

Use "list-dm-devices" to list all device mapper devices.

This command has one or more key or passphrase parameters. Guestfish will prompt for these separately.

This command depends on the feature "luks". See also "feature-available".

luks-open-ro¶

 luks-open-ro device mapname

This is the same as "luks-open" except that a read-only mapping is created.

This command has one or more key or passphrase parameters. Guestfish will prompt for these separately.

This command depends on the feature "luks". See also "feature-available".

lvcreate¶

 lvcreate logvol volgroup mbytes

This creates an LVM logical volume called "logvol" on the volume group "volgroup", with "size" megabytes.

This command depends on the feature "lvm2". See also "feature-available".

lvcreate-free¶

 lvcreate-free logvol volgroup percent

Create an LVM logical volume called /dev/volgroup/logvol, using approximately "percent" % of the free space remaining in the volume group. Most usefully, when "percent" is 100 this will create the largest possible LV.

This command depends on the feature "lvm2". See also "feature-available".

lvm-canonical-lv-name¶

 lvm-canonical-lv-name lvname

This converts alternative naming schemes for LVs that you might find to the canonical name. For example, /dev/mapper/VG-LV is converted to /dev/VG/LV.

This command returns an error if the "lvname" parameter does not refer to a logical volume.

"is-lv", "canonical-device-name" 参照。

lvm-clear-filter¶

 lvm-clear-filter

This undoes the effect of "lvm-set-filter". LVM will be able to see every block device.

This command also clears the LVM cache and performs a volume group scan.

lvm-remove-all¶

 lvm-remove-all

This command removes all LVM logical volumes, volume groups and physical volumes.

This command depends on the feature "lvm2". See also "feature-available".

lvm-scan¶

 lvm-scan true|false

This scans all block devices and rebuilds the list of LVM physical volumes, volume groups and logical volumes.

If the "activate" parameter is "true" then newly found volume groups and logical volumes are activated, meaning the LV /dev/VG/LV devices become visible.

When a libguestfs handle is launched it scans for existing devices, so you do not normally need to use this API. However it is useful when you have added a new device or deleted an existing device (such as when the "luks-open" API is used).

lvm-set-filter¶

 lvm-set-filter 'devices ...'

This sets the LVM device filter so that LVM will only be able to "see" the block devices in the list "devices", and will ignore all other attached block devices.

Where disk image(s) contain duplicate PVs or VGs, this command is useful to get LVM to ignore the duplicates, otherwise LVM can get confused. Note also there are two types of duplication possible: either cloned PVs/VGs which have identical UUIDs; or VGs that are not cloned but just happen to have the same name. In normal operation you cannot create this situation, but you can do it outside LVM, eg. by cloning disk images or by bit twiddling inside the LVM metadata.

This command also clears the LVM cache and performs a volume group scan.

You can filter whole block devices or individual partitions.

You cannot use this if any VG is currently in use (eg. contains a mounted filesystem), even if you are not filtering out that VG.

This command depends on the feature "lvm2". See also "feature-available".

lvremove¶

 lvremove device

Remove an LVM logical volume "device", where "device" is the path to the LV, such as /dev/VG/LV.

You can also remove all LVs in a volume group by specifying the VG name, /dev/VG.

This command depends on the feature "lvm2". See also "feature-available".

lvrename¶

 lvrename logvol newlogvol

Rename a logical volume "logvol" with the new name "newlogvol".

lvresize¶

 lvresize device mbytes

これは既存の LVM 論理ボリュームを "mbytes" に容量変更（拡大または縮小）します。縮小するとき、縮小された部分にあるデータは失われます。

This command depends on the feature "lvm2". See also "feature-available".

lvresize-free¶

 lvresize-free lv percent

This expands an existing logical volume "lv" so that it fills "pc"% of the remaining free space in the volume group. Commonly you would call this with pc = 100 which expands the logical volume as much as possible, using all remaining free space in the volume group.

This command depends on the feature "lvm2". See also "feature-available".

lvs¶

 lvs

List all the logical volumes detected. This is the equivalent of the lvs(8) command.

This returns a list of the logical volume device names (eg. /dev/VolGroup00/LogVol00).

"lvs-full", "list-filesystems" 参照。

This command depends on the feature "lvm2". See also "feature-available".

lvs-full¶

 lvs-full

List all the logical volumes detected. This is the equivalent of the lvs(8) command. The "full" version includes all fields.

This command depends on the feature "lvm2". See also "feature-available".

lvuuid¶

 lvuuid device

このコマンドは LVM 論理ボリューム "device" の UUID を返します。

lxattrlist¶

 lxattrlist path 'names ...'

This call allows you to get the extended attributes of multiple files, where all files are in the directory "path". "names" is the list of files from this directory.

On return you get a flat list of xattr structs which must be interpreted sequentially. The first xattr struct always has a zero-length "attrname". "attrval" in this struct is zero-length to indicate there was an error doing "lgetxattr" for this file, or is a C string which is a decimal number (the number of following attributes for this file, which could be "0"). Then after the first xattr struct are the zero or more attributes for the first named file. This repeats for the second and subsequent files.

This call is intended for programs that want to efficiently list a directory contents without making many round-trips. See also "lstatlist" for a similarly efficient call for getting standard stats.

This command depends on the feature "linuxxattrs". See also "feature-available".

max-disks¶

 max-disks

Return the maximum number of disks that may be added to a handle (eg. by "add-drive-opts" and similar calls).

This function was added in libguestfs 1.19.7. In previous versions of libguestfs the limit was 25.

この話題に関する詳細は "MAXIMUM NUMBER OF DISKS" in guestfs(3) を参照してください。

md-create¶

 md-create name 'devices ...' [missingbitmap:N] [nrdevices:N] [spare:N] [chunk:N] [level:..]

Create a Linux md (RAID) device named "name" on the devices in the list "devices".

オプションのパラメーターは次のとおりです:

"missingbitmap"

A bitmap of missing devices. If a bit is set it means that a missing device is added to the array. The least significant bit corresponds to the first device in the array.

例として:

"devices = ["/dev/sda"]" かつ "missingbitmap = 0x1" ならば、結果の配列は "[<missing>, "/dev/sda"]" になります。

"devices = ["/dev/sda"]" かつ "missingbitmap = 0x2" ならば、結果の配列は "["/dev/sda", <missing>]" になります。

この初期値は 0 です（デバイスがありません）。

"devices" の長さ + "missingbitmap" に設定されたビット数は "nrdevices" + "spare" と同じである必要があります。

"nrdevices"

稼動中の RAID デバイス数。

設定されていないと、この初期値は "devices" の長さ + "missingbitmap" に設定されたビット数になります。

"spare"

予備デバイス数。

設定されていなければ、デフォルトは 0 です。

"chunk"

バイト単位のチャンク容量です。

"level"

RAID レベルです。次のどれかです: linear, raid0, 0, stripe, raid1, 1, mirror, raid4, 4, raid5, 5, raid6, 6, raid10, 10。これらのいくつかは同じものを意味しています。将来さらなるレベルが追加される可能性があります。

設定されていないと、この初期値は "raid1" です。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "mdadm". See also "feature-available".

md-detail¶

 md-detail md

This command exposes the output of 'mdadm -DY <md>'. The following fields are usually present in the returned hash. Other fields may also be present.

"level"

MD デバイスの RAID レベル。

"devices"

MD デバイスにあるデバイス数。

"metadata"

使用されているメタ情報のバージョン。

"uuid"

MD デバイスの UUID。

"name"

MD デバイスの名前。

This command depends on the feature "mdadm". See also "feature-available".

md-stat¶

 md-stat md

This call returns a list of the underlying devices which make up the single software RAID array device "md".

ソフトウェア RAID デバイスの一覧を取得するには、"list-md-devices" を呼び出します。

Each structure returned corresponds to one device along with additional status information:

"mdstat_device"

下にあるデバイスの名前です。

"mdstat_index"

配列の中にあるこのデバイスのインデックスです。

"mdstat_flags"

Flags associated with this device. This is a string containing (in no specific order) zero or more of the following flags:

This command depends on the feature "mdadm". See also "feature-available".

md-stop¶

 md-stop md

このコマンドは "md" という名前の MD アレイを無効化します。デバイスが停止されますが、破壊またはゼロ書き込みされません。

This command depends on the feature "mdadm". See also "feature-available".

mkdir¶

 mkdir path

"path" という名前のディレクトリーを作成します。

mkdir-mode¶

 mkdir-mode path mode

このコマンドはディレクトリーを作成します、ディレクトリーの初期パーミッションを "mode" に設定します。

一般的な Linux ファイルシステムに対して、設定されている実際のモードが "mode & ~umask & 01777" とされます。Linux 固有のファイルシステム以外は他の方法でモードを解釈します。

"mkdir", "umask" 参照。

mkdir-p¶

 mkdir-p path

"path" という名前のディレクトリーを作成します、必要に応じて親ディレクトリーを作成します。これは "mkdir -p" シェルコマンドと似ています。

mkdtemp¶

 mkdtemp tmpl

This command creates a temporary directory. The "tmpl" parameter should be a full pathname for the temporary directory name with the final six characters being "XXXXXX".

例: "/tmp/myprogXXXXXX" または "/Temp/myprogXXXXXX"、2 つめの例は Windows ファイルシステムに適しています。

作成された一時ディレクトリーの名前を返します。

一時ディレクトリーがモード 0700 で作成され、root により所有されます。

The caller is responsible for deleting the temporary directory and its contents after use.

関連項目: mkdtemp(3)

mke2fs¶

 mke2fs device [blockscount:N] [blocksize:N] [fragsize:N] [blockspergroup:N] [numberofgroups:N] [bytesperinode:N] [inodesize:N] [journalsize:N] [numberofinodes:N] [stridesize:N] [stripewidth:N] [maxonlineresize:N] [reservedblockspercentage:N] [mmpupdateinterval:N] [journaldevice:..] [label:..] [lastmounteddir:..] [creatoros:..] [fstype:..] [usagetype:..] [uuid:..] [forcecreate:true|false] [writesbandgrouponly:true|false] [lazyitableinit:true|false] [lazyjournalinit:true|false] [testfs:true|false] [discard:true|false] [quotatype:true|false] [extent:true|false] [filetype:true|false] [flexbg:true|false] [hasjournal:true|false] [journaldev:true|false] [largefile:true|false] [quota:true|false] [resizeinode:true|false] [sparsesuper:true|false] [uninitbg:true|false]

"mke2fs" is used to create an ext2, ext3, or ext4 filesystem on "device".

The optional "blockscount" is the size of the filesystem in blocks. If omitted it defaults to the size of "device". Note if the filesystem is too small to contain a journal, "mke2fs" will silently create an ext2 filesystem instead.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

mke2fs-J¶

 mke2fs-J fstype blocksize device journal

これは外部ジャーナルを "journal" に持つ ext2/3/4 ファイルシステムを "device" に作成します。次のコマンドと同じです:

 mke2fs -t fstype -b blocksize -J device=<journal> <device>

"mke2journal" 参照。

この関数は推奨されません。 新しいコードでは、代わりに "mke2fs" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

mke2fs-JL¶

 mke2fs-JL fstype blocksize device label

これは外部ジャーナルをジャーナルラベル "label" に持つ ext2/3/4 ファイルシステムを "device" に作成します。

"mke2journal-L" 参照。

この関数は推奨されません。 新しいコードでは、代わりに "mke2fs" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

mke2fs-JU¶

 mke2fs-JU fstype blocksize device uuid

これは外部ジャーナルを UUID "uuid" のジャーナルに持つ ext2/3/4 ファイルシステムを "device" に作成します。

"mke2journal-U" 参照。

この関数は推奨されません。 新しいコードでは、代わりに "mke2fs" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

This command depends on the feature "linuxfsuuid". See also "feature-available".

mke2journal¶

 mke2journal blocksize device

これは "device" に ext2 外部ジャーナルを作成します。次のコマンドと同じです:

 mke2fs -O journal_dev -b blocksize device

この関数は推奨されません。 新しいコードでは、代わりに "mke2fs" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

mke2journal-L¶

 mke2journal-L blocksize label device

これはラベル "label" を持つ "device" に ext2 外部ジャーナルを作成します。

この関数は推奨されません。 新しいコードでは、代わりに "mke2fs" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

mke2journal-U¶

 mke2journal-U blocksize uuid device

This creates an ext2 external journal on "device" with UUID "uuid".

この関数は推奨されません。 新しいコードでは、代わりに "mke2fs" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

This command depends on the feature "linuxfsuuid". See also "feature-available".

mkfifo¶

 mkfifo mode path

This call creates a FIFO (named pipe) called "path" with mode "mode". It is just a convenient wrapper around "mknod".

Unlike with "mknod", "mode" must contain only permissions bits.

実際に設定されるモードは umask により影響されます。

This command depends on the feature "mknod". See also "feature-available".

mkfs¶

mkfs-opts¶

 mkfs fstype device [blocksize:N] [features:..] [inode:N] [sectorsize:N] [label:..]

This function creates a filesystem on "device". The filesystem type is "fstype", for example "ext3".

オプション引数は次のとおりです:

"blocksize"

ファイルシステムのブロック容量です。サポートされるブロック容量は、ファイルシステムの形式に依存します。一般的に Linux ext2/3 ファイルシステムには 1024, 2048 または 4096 です。

For VFAT and NTFS the "blocksize" parameter is treated as the requested cluster size.

UFS ブロック容量は mkfs.ufs(8) を参照してください。

"特徴"

これは -O パラメーターを外部の mkfs プログラムに渡します。

特定のファイルシステム形式には、追加のファイルシステム機能が選択できます。詳細は mke2fs(8) および mkfs.ufs(8) を参照してください。

"gfs" または "gfs2" ファイルシステム形式ではこのオプションのパラメーターを使用できません。

"inode"

This passes the -I parameter to the external mke2fs(8) program which sets the inode size (only for ext2/3/4 filesystems at present).

"sectorsize"

This passes the -S parameter to external mkfs.ufs(8) program, which sets sector size for ufs filesystem.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

mkfs-b¶

 mkfs-b fstype blocksize device

This call is similar to "mkfs", but it allows you to control the block size of the resulting filesystem. Supported block sizes depend on the filesystem type, but typically they are 1024, 2048 or 4096 only.

For VFAT and NTFS the "blocksize" parameter is treated as the requested cluster size.

This function is deprecated. In new code, use the "mkfs" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

mkfs-btrfs¶

 mkfs-btrfs 'devices ...' [allocstart:N] [bytecount:N] [datatype:..] [leafsize:N] [label:..] [metadata:..] [nodesize:N] [sectorsize:N]

すべての設定可能なものについて設定を許可して、btrfs ファイルシステムを作成します。オプション引数の詳細は mkfs.btrfs(8) を参照してください。

btrfs ファイルシステムは複数のデバイスを結合できるので、これは非空白のデバイス一覧をとります。

To create general filesystems, use "mkfs".

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "btrfs". See also "feature-available".

mklost-and-found¶

 mklost-and-found mountpoint

Make the "lost+found" directory, normally in the root directory of an ext2/3/4 filesystem. "mountpoint" is the directory under which we try to create the "lost+found" directory.

mkmountpoint¶

 mkmountpoint exemptpath

"mkmountpoint" and "rmmountpoint" are specialized calls that can be used to create extra mountpoints before mounting the first filesystem.

These calls are only necessary in some very limited circumstances, mainly the case where you want to mount a mix of unrelated and/or read-only filesystems together.

For example, live CDs often contain a "Russian doll" nest of filesystems, an ISO outer layer, with a squashfs image inside, with an ext2/3 image inside that. You can unpack this as follows in guestfish:

 add-ro Fedora-11-i686-Live.iso
 run
 mkmountpoint /cd
 mkmountpoint /sqsh
 mkmountpoint /ext3fs
 mount /dev/sda /cd
 mount-loop /cd/LiveOS/squashfs.img /sqsh
 mount-loop /sqsh/LiveOS/ext3fs.img /ext3fs

The inner filesystem is now unpacked under the /ext3fs mountpoint.

"mkmountpoint" is not compatible with "umount-all". You may get unexpected errors if you try to mix these calls. It is safest to manually unmount filesystems and remove mountpoints after use.

"umount-all" unmounts filesystems by sorting the paths longest first, so for this to work for manual mountpoints, you must ensure that the innermost mountpoints have the longest pathnames, as in the example code above.

詳細は https://bugzilla.redhat.com/show_bug.cgi?id=599503 を参照してください

Autosync [see "set-autosync", this is set by default on handles] can cause "umount-all" to be called when the handle is closed which can also trigger these issues.

mknod¶

 mknod mode devmajor devminor path

This call creates block or character special devices, or named pipes (FIFOs).

The "mode" parameter should be the mode, using the standard constants. "devmajor" and "devminor" are the device major and minor numbers, only used when creating block and character special devices.

Note that, just like mknod(2), the mode must be bitwise OR'd with S_IFBLK, S_IFCHR, S_IFIFO or S_IFSOCK (otherwise this call just creates a regular file). These constants are available in the standard Linux header files, or you can use "mknod-b", "mknod-c" or "mkfifo" which are wrappers around this command which bitwise OR in the appropriate constant for you.

実際に設定されるモードは umask により影響されます。

This command depends on the feature "mknod". See also "feature-available".

mknod-b¶

 mknod-b mode devmajor devminor path

This call creates a block device node called "path" with mode "mode" and device major/minor "devmajor" and "devminor". It is just a convenient wrapper around "mknod".

Unlike with "mknod", "mode" must contain only permissions bits.

実際に設定されるモードは umask により影響されます。

This command depends on the feature "mknod". See also "feature-available".

mknod-c¶

 mknod-c mode devmajor devminor path

This call creates a char device node called "path" with mode "mode" and device major/minor "devmajor" and "devminor". It is just a convenient wrapper around "mknod".

Unlike with "mknod", "mode" must contain only permissions bits.

実際に設定されるモードは umask により影響されます。

This command depends on the feature "mknod". See also "feature-available".

mksquashfs¶

 mksquashfs path (filename|-) [compress:..] [excludes:..]

Create a squashfs filesystem for the specified "path".

The optional "compress" flag controls compression. If not given, then the output compressed using "gzip". Otherwise one of the following strings may be given to select the compression type of the squashfs: "gzip", "lzma", "lzo", "lz4", "xz".

The other optional arguments are:

"excludes"

A list of wildcards. Files are excluded if they match any of the wildcards.

Please note that this API may fail when used to compress directories with large files, such as the resulting squashfs will be over 3GB big.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "squashfs". See also "feature-available".

mkswap¶

mkswap-opts¶

 mkswap device [label:..] [uuid:..]

Linux swap パーティションを "device" に作成します。

The option arguments "label" and "uuid" allow you to set the label and/or UUID of the new swap partition.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

mkswap-L¶

 mkswap-L label device

ラベル "label" を持つ "device" に swap パーティションを作成します。

Note that you cannot attach a swap label to a block device (eg. /dev/sda), just to a partition. This appears to be a limitation of the kernel or swap tools.

この関数は推奨されません。 新しいコードでは、代わりに "mkswap" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

mkswap-U¶

 mkswap-U uuid device

UUID "uuid" の "device" に swap パーティションを作成します。

この関数は推奨されません。 新しいコードでは、代わりに "mkswap" を使用してください。

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

This command depends on the feature "linuxfsuuid". See also "feature-available".

mkswap-file¶

 mkswap-file path

swap ファイルを作成します。

This command just writes a swap file signature to an existing file. To create the file itself, use something like "fallocate".

mktemp¶

 mktemp tmpl [suffix:..]

This command creates a temporary file. The "tmpl" parameter should be a full pathname for the temporary directory name with the final six characters being "XXXXXX".

例: "/tmp/myprogXXXXXX" または "/Temp/myprogXXXXXX"、2 つめの例は Windows ファイルシステムに適しています。

The name of the temporary file that was created is returned.

The temporary file is created with mode 0600 and is owned by root.

The caller is responsible for deleting the temporary file after use.

If the optional "suffix" parameter is given, then the suffix (eg. ".txt") is appended to the temporary name.

関連項目: "mkdtemp"

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

modprobe¶

 modprobe modulename

アプライアンスにカーネルモジュールを読み込みます。

This command depends on the feature "linuxmodules". See also "feature-available".

mount¶

 mount mountable mountpoint

Mount a guest disk at a position in the filesystem. Block devices are named /dev/sda, /dev/sdb and so on, as they were added to the guest. If those block devices contain partitions, they will have the usual names (eg. /dev/sda1). Also LVM /dev/VG/LV-style names can be used, or ‘mountable’ strings returned by "list-filesystems" or "inspect-get-mountpoints".

The rules are the same as for mount(2): A filesystem must first be mounted on / before others can be mounted. Other filesystems can only be mounted on directories which already exist.

The mounted filesystem is writable, if we have sufficient permissions on the underlying device.

Before libguestfs 1.13.16, this call implicitly added the options "sync" and "noatime". The "sync" option greatly slowed writes and caused many problems for users. If your program might need to work with older versions of libguestfs, use "mount-options" instead (using an empty string for the first parameter if you don't want any options).

mount-9p¶

 mount-9p mounttag mountpoint [options:..]

タグ "mounttag" を持つ virtio-9p ファイルシステムをディレクトリ "mountpoint" にマウントします。

If required, "trans=virtio" will be automatically added to the options. Any other options required can be passed in the optional "options" parameter.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

ローカルマウント¶

 mount-local localmountpoint [readonly:true|false] [options:..] [cachetimeout:N] [debugcalls:true|false]

This call exports the libguestfs-accessible filesystem to a local mountpoint (directory) called "localmountpoint". Ordinary reads and writes to files and directories under "localmountpoint" are redirected through libguestfs.

If the optional "readonly" flag is set to true, then writes to the filesystem return error "EROFS".

"options" is a comma-separated list of mount options. See guestmount(1) for some useful options.

"cachetimeout" sets the timeout (in seconds) for cached directory entries. The default is 60 seconds. See guestmount(1) for further information.

If "debugcalls" is set to true, then additional debugging information is generated for every FUSE call.

When "mount-local" returns, the filesystem is ready, but is not processing requests (access to it will block). You have to call "mount-local-run" to run the main loop.

完全なドキュメントは "MOUNT LOCAL" in guestfs(3) を参照してください。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

mount-local-run¶

 mount-local-run

Run the main loop which translates kernel calls to libguestfs calls.

This should only be called after "mount-local" returns successfully. The call will not return until the filesystem is unmounted.

Note you must not make concurrent libguestfs calls on the same handle from another thread.

You may call this from a different thread than the one which called "mount-local", subject to the usual rules for threads and libguestfs (see "MULTIPLE HANDLES AND MULTIPLE THREADS" in guestfs(3)).

完全なドキュメントは "MOUNT LOCAL" in guestfs(3) を参照してください。

mount-loop¶

 mount-loop file mountpoint

This command lets you mount file (a filesystem image in a file) on a mount point. It is entirely equivalent to the command "mount -o loop file mountpoint".

mount-options¶

 mount-options options mountable mountpoint

This is the same as the "mount" command, but it allows you to set the mount options as for the mount(8) -o flag.

If the "options" parameter is an empty string, then no options are passed (all options default to whatever the filesystem uses).

mount-ro¶

 mount-ro mountable mountpoint

This is the same as the "mount" command, but it mounts the filesystem with the read-only (-o ro) flag.

mount-vfs¶

 mount-vfs options vfstype mountable mountpoint

This is the same as the "mount" command, but it allows you to set both the mount options and the vfstype as for the mount(8) -o and -t flags.

mountable-device¶

 mountable-device mountable

Returns the device name of a mountable. In quite a lot of cases, the mountable is the device name.

However this doesn't apply for btrfs subvolumes, where the mountable is a combination of both the device name and the subvolume path (see also "mountable-subvolume" to extract the subvolume path of the mountable if any).

mountable-subvolume¶

 mountable-subvolume mountable

Returns the subvolume path of a mountable. Btrfs subvolumes mountables are a combination of both the device name and the subvolume path (see also "mountable-device" to extract the device of the mountable).

If the mountable does not represent a btrfs subvolume, then this function fails and the "errno" is set to "EINVAL".

mountpoints¶

 mountpoints

This call is similar to "mounts". That call returns a list of devices. This one returns a hash table (map) of device name to directory where the device is mounted.

mounts¶

 mounts

This returns the list of currently mounted filesystems. It returns the list of devices (eg. /dev/sda1, /dev/VG/LV).

Some internal mounts are not shown.

関連項目: "mountpoints"

mv¶

 mv src dest

This moves a file from "src" to "dest" where "dest" is either a destination filename or destination directory.

See also: "rename".

nr-devices¶

 nr-devices

これは追加されたブロックデバイス全体の数を返します。これは "list-devices" により返されるデバイス数と同じです。

追加できるデバイスの最大数を確認するには "max-disks" を呼び出しください。

ntfs-3g-probe¶

 ntfs-3g-probe true|false device

This command runs the ntfs-3g.probe(8) command which probes an NTFS "device" for mountability. (Not all NTFS volumes can be mounted read-write, and some cannot be mounted at all).

"rw" is a boolean flag. Set it to true if you want to test if the volume can be mounted read-write. Set it to false if you want to test if the volume can be mounted read-only.

The return value is an integer which 0 if the operation would succeed, or some non-zero value documented in the ntfs-3g.probe(8) manual page.

This command depends on the feature "ntfs3g". See also "feature-available".

ntfscat-i¶

 ntfscat-i device inode (filename|-)

Download a file given its inode from a NTFS filesystem and save it as filename on the local machine.

This allows to download some otherwise inaccessible files such as the ones within the $Extend folder.

The filesystem from which to extract the file must be unmounted, otherwise the call will fail.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

ntfsclone-in¶

 ntfsclone-in (backupfile|-) device

"backupfile" を(前に "/ntfsclone-out" を呼び出したところから) "device" に復元します。このデバイスの既存の内容はすべて上書きされます。

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

This command depends on the feature "ntfs3g". See also "feature-available".

ntfsclone-out¶

 ntfsclone-out device (backupfile|-) [metadataonly:true|false] [rescue:true|false] [ignorefscheck:true|false] [preservetimestamps:true|false] [force:true|false]

Stream the NTFS filesystem "device" to the local file "backupfile". The format used for the backup file is a special format used by the ntfsclone(8) tool.

If the optional "metadataonly" flag is true, then only the metadata is saved, losing all the user data (this is useful for diagnosing some filesystem problems).

オプションの "rescue", "ignorefscheck", "preservetimestamps" および "force" フラグは ntfsclone(8) マニュアルページに詳細な意味が説明されています。

ファイルを libguestfs デバイスに復元するには "ntfsclone-in" を使用します。

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "ntfs3g". See also "feature-available".

ntfsfix¶

 ntfsfix device [clearbadsectors:true|false]

このコマンドは、いくつかの基本的な NTFS の不整合を修復し、 NTFS ジャーナルファイルをリセットし、次回 Windows 起動時に NTFS 完全性チェックをスケジュール化します。

これは Windows の "chkdsk" と同等では ありません 。不整合に対してファイルシステムをスキャン しません 。

オプションの "clearbadsectors" フラグは不良セクターの一覧をクリアします。不良セクターを持つディスクを新しいディスクにクローンした後に有用です。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "ntfs3g". See also "feature-available".

ntfsresize¶

ntfsresize-opts¶

 ntfsresize device [size:N] [force:true|false]

このコマンドは NTFS ファイルシステムの容量を変更します。基礎となるデバイスの容量まで拡張または縮小します。

オプションのパラメーターは次のとおりです:

"size"

ファイルシステムの新しい容量 (バイト単位)。省略されると、ファイルシステムはコンテナー (例: パーティション) に合うよう容量を変更されます。

"force"

If this option is true, then force the resize of the filesystem even if the filesystem is marked as requiring a consistency check.

After the resize operation, the filesystem is always marked as requiring a consistency check (for safety). You have to boot into Windows to perform this check and clear this condition. If you don't set the "force" option then it is not possible to call "ntfsresize" multiple times on a single filesystem without booting into Windows between each resize.

ntfsresize(8) 参照。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "ntfsprogs". See also "feature-available".

ntfsresize-size¶

 ntfsresize-size device size

This command is the same as "ntfsresize" except that it allows you to specify the new size (in bytes) explicitly.

This function is deprecated. In new code, use the "ntfsresize" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

This command depends on the feature "ntfsprogs". See also "feature-available".

parse-environment¶

 parse-environment

Parse the program’s environment and set flags in the handle accordingly. For example if "LIBGUESTFS_DEBUG=1" then the ‘verbose’ flag is set in the handle.

Most programs do not need to call this. It is done implicitly when you call "create".

See "ENVIRONMENT VARIABLES" in guestfs(3) for a list of environment variables that can affect libguestfs handles. See also "guestfs_create_flags" in guestfs(3), and "parse-environment-list".

parse-environment-list¶

 parse-environment-list 'environment ...'

Parse the list of strings in the argument "environment" and set flags in the handle accordingly. For example if "LIBGUESTFS_DEBUG=1" is a string in the list, then the ‘verbose’ flag is set in the handle.

This is the same as "parse-environment" except that it parses an explicit list of strings instead of the program's environment.

part-add¶

 part-add device prlogex startsect endsect

This command adds a partition to "device". If there is no partition table on the device, call "part-init" first.

The "prlogex" parameter is the type of partition. Normally you should pass "p" or "primary" here, but MBR partition tables also support "l" (or "logical") and "e" (or "extended") partition types.

"startsect" and "endsect" are the start and end of the partition in sectors. "endsect" may be negative, which means it counts backwards from the end of the disk ("-1" is the last sector).

Creating a partition which covers the whole disk is not so easy. Use "part-disk" to do that.

part-del¶

 part-del device partnum

このコマンドは "device" にある "partnum" 番のパーティションを削除します。

Note that in the case of MBR partitioning, deleting an extended partition also deletes any logical partitions it contains.

part-disk¶

 part-disk device parttype

This command is simply a combination of "part-init" followed by "part-add" to create a single primary partition covering the whole disk.

"parttype" is the partition table type, usually "mbr" or "gpt", but other possible values are described in "part-init".

part-expand-gpt¶

 part-expand-gpt device

Move backup GPT data structures to the end of the disk. This is useful in case of in-place image expand since disk space after backup GPT header is not usable. This is equivalent to "sgdisk -e".

See also sgdisk(8).

This command depends on the feature "gdisk". See also "feature-available".

part-get-bootable¶

 part-get-bootable device partnum

"device" にあるパーティション "partnum" にブート可能フラグが設定されていると、このコマンドは真を返します。

"part-set-bootable" 参照。

part-get-disk-guid¶

 part-get-disk-guid device

Return the disk identifier (GUID) of a GPT-partitioned "device". Behaviour is undefined for other partition types.

This command depends on the feature "gdisk". See also "feature-available".

part-get-gpt-attributes¶

 part-get-gpt-attributes device partnum

Return the attribute flags of numbered GPT partition "partnum". An error is returned for MBR partitions.

This command depends on the feature "gdisk". See also "feature-available".

part-get-gpt-guid¶

 part-get-gpt-guid device partnum

Return the GUID of numbered GPT partition "partnum".

This command depends on the feature "gdisk". See also "feature-available".

part-get-gpt-type¶

 part-get-gpt-type device partnum

Return the type GUID of numbered GPT partition "partnum". For MBR partitions, return an appropriate GUID corresponding to the MBR type. Behaviour is undefined for other partition types.

This command depends on the feature "gdisk". See also "feature-available".

part-get-mbr-id¶

 part-get-mbr-id device partnum

Returns the MBR type byte (also known as the ID byte) from the numbered partition "partnum".

Note that only MBR (old DOS-style) partitions have type bytes. You will get undefined results for other partition table types (see "part-get-parttype").

part-get-mbr-part-type¶

 part-get-mbr-part-type device partnum

This returns the partition type of an MBR partition numbered "partnum" on device "device".

It returns "primary", "logical", or "extended".

part-get-name¶

 part-get-name device partnum

This gets the partition name on partition numbered "partnum" on device "device". Note that partitions are numbered from 1.

The partition name can only be read on certain types of partition table. This works on "gpt" but not on "mbr" partitions.

part-get-parttype¶

 part-get-parttype device

This command examines the partition table on "device" and returns the partition table type (format) being used.

Common return values include: "msdos" (a DOS/Windows style MBR partition table), "gpt" (a GPT/EFI-style partition table). Other values are possible, although unusual. See "part-init" for a full list.

part-init¶

 part-init device parttype

This creates an empty partition table on "device" of one of the partition types listed below. Usually "parttype" should be either "msdos" or "gpt" (for large disks).

Initially there are no partitions. Following this, you should call "part-add" for each partition required.

Possible values for "parttype" are:

efi

gpt

Intel EFI / GPT パーティションテーブル。

This is recommended for >= 2 TB partitions that will be accessed from Linux and Intel-based Mac OS X. It also has limited backwards compatibility with the "mbr" format.

mbr

msdos

The standard PC "Master Boot Record" (MBR) format used by MS-DOS and Windows. This partition type will only work for device sizes up to 2 TB. For large disks we recommend using "gpt".

Other partition table types that may work but are not supported include:

aix

AIX ディスクラベル。

amiga

rdb

Amiga "Rigid Disk Block" 形式。

bsd

BSD ディスクラベル.

dasd

DASD, IBM メインフレームにおいて使用.

dvh

MIPS/SGI ボリューム.

mac

古い Mac パーティション形式。最近の Mac は "gpt" を使用します。

pc98

NEC PC-98 形式。日本において一般的に見られます。

sun

Sun ディスクラベル

part-list¶

 part-list device

This command parses the partition table on "device" and returns the list of partitions found.

The fields in the returned structure are:

part_num

パーティション番号。1 から数えます。

part_start

Start of the partition in bytes. To get sectors you have to divide by the device’s sector size, see "blockdev-getss".

part_end

バイト単位のパーティションの終了位置。

part_size

バイト単位のパーティション容量。

part-resize¶

 part-resize device partnum endsect

This command resizes the partition numbered "partnum" on "device" by moving the end position.

Note that this does not modify any filesystem present in the partition. If you wish to do this, you will need to use filesystem resizing commands like "resize2fs".

When growing a partition you will want to grow the filesystem afterwards, but when shrinking, you need to shrink the filesystem before the partition.

part-set-bootable¶

 part-set-bootable device partnum true|false

デバイス "device" のパーティション番号 "partnum" にブート可能フラグを設定します。パーティションは 1 から番号が始まることに注意してください。

The bootable flag is used by some operating systems (notably Windows) to determine which partition to boot from. It is by no means universally recognized.

part-set-disk-guid¶

 part-set-disk-guid device guid

Set the disk identifier (GUID) of a GPT-partitioned "device" to "guid". Return an error if the partition table of "device" isn't GPT, or if "guid" is not a valid GUID.

This command depends on the feature "gdisk". See also "feature-available".

part-set-disk-guid-random¶

 part-set-disk-guid-random device

Set the disk identifier (GUID) of a GPT-partitioned "device" to a randomly generated value. Return an error if the partition table of "device" isn't GPT.

This command depends on the feature "gdisk". See also "feature-available".

part-set-gpt-attributes¶

 part-set-gpt-attributes device partnum attributes

Set the attribute flags of numbered GPT partition "partnum" to "attributes". Return an error if the partition table of "device" isn't GPT.

See https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_entries for a useful list of partition attributes.

This command depends on the feature "gdisk". See also "feature-available".

part-set-gpt-guid¶

 part-set-gpt-guid device partnum guid

Set the GUID of numbered GPT partition "partnum" to "guid". Return an error if the partition table of "device" isn't GPT, or if "guid" is not a valid GUID.

This command depends on the feature "gdisk". See also "feature-available".

part-set-gpt-type¶

 part-set-gpt-type device partnum guid

Set the type GUID of numbered GPT partition "partnum" to "guid". Return an error if the partition table of "device" isn't GPT, or if "guid" is not a valid GUID.

See http://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs for a useful list of type GUIDs.

This command depends on the feature "gdisk". See also "feature-available".

part-set-mbr-id¶

 part-set-mbr-id device partnum idbyte

Sets the MBR type byte (also known as the ID byte) of the numbered partition "partnum" to "idbyte". Note that the type bytes quoted in most documentation are in fact hexadecimal numbers, but usually documented without any leading "0x" which might be confusing.

Note that only MBR (old DOS-style) partitions have type bytes. You will get undefined results for other partition table types (see "part-get-parttype").

part-set-name¶

 part-set-name device partnum name

This sets the partition name on partition numbered "partnum" on device "device". Note that partitions are numbered from 1.

The partition name can only be set on certain types of partition table. This works on "gpt" but not on "mbr" partitions.

part-to-dev¶

 part-to-dev partition

This function takes a partition name (eg. "/dev/sdb1") and removes the partition number, returning the device name (eg. "/dev/sdb").

The named partition must exist, for example as a string returned from "list-partitions".

"part-to-partnum", "device-index" も参照してください。

part-to-partnum¶

 part-to-partnum partition

This function takes a partition name (eg. "/dev/sdb1") and returns the partition number (eg. 1).

The named partition must exist, for example as a string returned from "list-partitions".

"part-to-dev" 参照。

ping-daemon¶

 ping-daemon

This is a test probe into the guestfs daemon running inside the libguestfs appliance. Calling this function checks that the daemon responds to the ping message, without affecting the daemon or attached block device(s) in any other way.

pread¶

 pread path count offset

This command lets you read part of a file. It reads "count" bytes of the file, starting at "offset", from file "path".

This may read fewer bytes than requested. For further details see the pread(2) system call.

"pwrite", "pread-device" 参照。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

pread-device¶

 pread-device device count offset

This command lets you read part of a block device. It reads "count" bytes of "device", starting at "offset".

This may read fewer bytes than requested. For further details see the pread(2) system call.

"pread" 参照。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

pvchange-uuid¶

 pvchange-uuid device

物理ボリューム "device" に対する新しいランダムな UUID を生成します。

This command depends on the feature "lvm2". See also "feature-available".

pvchange-uuid-all¶

 pvchange-uuid-all

すべての物理ボリュームに対する新しいランダムな UUID を生成します。

This command depends on the feature "lvm2". See also "feature-available".

pvcreate¶

 pvcreate device

This creates an LVM physical volume on the named "device", where "device" should usually be a partition name such as /dev/sda1.

This command depends on the feature "lvm2". See also "feature-available".

pvremove¶

 pvremove device

This wipes a physical volume "device" so that LVM will no longer recognise it.

The implementation uses the "pvremove" command which refuses to wipe physical volumes that contain any volume groups, so you have to remove those first.

This command depends on the feature "lvm2". See also "feature-available".

pvresize¶

 pvresize device

This resizes (expands or shrinks) an existing LVM physical volume to match the new size of the underlying device.

This command depends on the feature "lvm2". See also "feature-available".

pvresize-size¶

 pvresize-size device size

This command is the same as "pvresize" except that it allows you to specify the new size (in bytes) explicitly.

This command depends on the feature "lvm2". See also "feature-available".

pvs¶

 pvs

List all the physical volumes detected. This is the equivalent of the pvs(8) command.

This returns a list of just the device names that contain PVs (eg. /dev/sda2).

"pvs-full" 参照。

This command depends on the feature "lvm2". See also "feature-available".

pvs-full¶

 pvs-full

List all the physical volumes detected. This is the equivalent of the pvs(8) command. The "full" version includes all fields.

This command depends on the feature "lvm2". See also "feature-available".

pvuuid¶

 pvuuid device

このコマンドは LVM PV "device" の UUID を返します。

pwrite¶

 pwrite path content offset

This command writes to part of a file. It writes the data buffer "content" to the file "path" starting at offset "offset".

This command implements the pwrite(2) system call, and like that system call it may not write the full data requested. The return value is the number of bytes that were actually written to the file. This could even be 0, although short writes are unlikely for regular files in ordinary circumstances.

"pread", "pwrite-device" 参照。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

pwrite-device¶

 pwrite-device device content offset

This command writes to part of a device. It writes the data buffer "content" to "device" starting at offset "offset".

This command implements the pwrite(2) system call, and like that system call it may not write the full data requested (although short writes to disk devices and partitions are probably impossible with standard Linux kernels).

"pwrite" 参照。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

read-file¶

 read-file path

This calls returns the contents of the file "path" as a buffer.

Unlike "cat", this function can correctly handle files that contain embedded ASCII NUL characters.

read-lines¶

 read-lines path

"path" という名前のファイルの内容を返します。

The file contents are returned as a list of lines. Trailing "LF" and "CRLF" character sequences are not returned.

Note that this function cannot correctly handle binary files (specifically, files containing "\0" character which is treated as end of string). For those you need to use the "read-file" function and split the buffer into lines yourself.

readdir¶

 readdir dir

This returns the list of directory entries in directory "dir".

All entries in the directory are returned, including "." and "..". The entries are not sorted, but returned in the same order as the underlying filesystem.

Also this call returns basic file type information about each file. The "ftyp" field will contain one of the following characters:

'b'

ブロック特殊

'c'

キャラクター特殊

'd'

ディレクトリ

'f'

FIFO (名前付きパイプ)

'l'

シンボリックリンク

'r'

通常のファイル

's'

ソケット

'u'

未知のファイル種別

'?'

The readdir(3) call returned a "d_type" field with an unexpected value

This function is primarily intended for use by programs. To get a simple list of names, use "ls". To get a printable directory for human consumption, use "ll".

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

readlink¶

 readlink path

このコマンドはシンボリックリンクの参照先を読み込みます。

readlinklist¶

 readlinklist path 'names ...'

This call allows you to do a "readlink" operation on multiple files, where all files are in the directory "path". "names" is the list of files from this directory.

On return you get a list of strings, with a one-to-one correspondence to the "names" list. Each string is the value of the symbolic link.

If the readlink(2) operation fails on any name, then the corresponding result string is the empty string "". However the whole operation is completed even if there were readlink(2) errors, and so you can call this function with names where you don't know if they are symbolic links already (albeit slightly less efficient).

This call is intended for programs that want to efficiently list a directory contents without making many round-trips.

realpath¶

 realpath path

Return the canonicalized absolute pathname of "path". The returned path has no ".", ".." or symbolic link path elements.

remount¶

 remount mountpoint [rw:true|false]

This call allows you to change the "rw" (readonly/read-write) flag on an already mounted filesystem at "mountpoint", converting a readonly filesystem to be read-write, or vice-versa.

Note that at the moment you must supply the "optional" "rw" parameter. In future we may allow other flags to be adjusted.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

remove-drive¶

 remove-drive label

This function is conceptually the opposite of "add-drive-opts". It removes the drive that was previously added with label "label".

Note that in order to remove drives, you have to add them with labels (see the optional "label" argument to "add-drive-opts"). If you didn't use a label, then they cannot be removed.

You can call this function before or after launching the handle. If called after launch, if the backend supports it, we try to hot unplug the drive: see "HOTPLUGGING" in guestfs(3). The disk must not be in use (eg. mounted) when you do this. We try to detect if the disk is in use and stop you from doing this.

removexattr¶

 removexattr xattr path

This call removes the extended attribute named "xattr" of the file "path".

関連項目: "lremovexattr", attr(5)

This command depends on the feature "linuxxattrs". See also "feature-available".

rename¶

 rename oldpath newpath

Rename a file to a new place on the same filesystem. This is the same as the Linux rename(2) system call. In most cases you are better to use "mv" instead.

resize2fs¶

 resize2fs device

This resizes an ext2, ext3 or ext4 filesystem to match the size of the underlying device.

See also "RESIZE2FS ERRORS" in guestfs(3).

resize2fs-M¶

 resize2fs-M device

This command is the same as "resize2fs", but the filesystem is resized to its minimum size. This works like the -M option to the "resize2fs" command.

To get the resulting size of the filesystem you should call "tune2fs-l" and read the "Block size" and "Block count" values. These two numbers, multiplied together, give the resulting size of the minimal filesystem in bytes.

See also "RESIZE2FS ERRORS" in guestfs(3).

resize2fs-size¶

 resize2fs-size device size

This command is the same as "resize2fs" except that it allows you to specify the new size (in bytes) explicitly.

See also "RESIZE2FS ERRORS" in guestfs(3).

rm¶

 rm path

単一ファイル "path" を削除します。

rm-f¶

 rm-f path

ファイル "path" を削除します。

ファイルが存在しない場合、そのエラーは無視されます。（I/O エラーや不正なパスなど、他のエラーは無視されません）

この呼び出しはディレクトリーを削除できません。空のディレクトリーを削除するには "rmdir" を、ディレクトリーを再帰的に削除するには "rm-rf" を使用します。

rm-rf¶

 rm-rf path

Remove the file or directory "path", recursively removing the contents if its a directory. This is like the "rm -rf" shell command.

rmdir¶

 rmdir path

単一ディレクトリ "path" を削除します。

rmmountpoint¶

 rmmountpoint exemptpath

This call removes a mountpoint that was previously created with "mkmountpoint". See "mkmountpoint" for full details.

rsync¶

 rsync src dest [archive:true|false] [deletedest:true|false]

This call may be used to copy or synchronize two directories under the same libguestfs handle. This uses the rsync(1) program which uses a fast algorithm that avoids copying files unnecessarily.

"src" and "dest" are the source and destination directories. Files are copied from "src" to "dest".

オプション引数は次のとおりです:

"archive"

Turns on archive mode. This is the same as passing the --archive flag to "rsync".

"deletedest"

Delete files at the destination that do not exist at the source.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "rsync". See also "feature-available".

rsync-in¶

 rsync-in remote dest [archive:true|false] [deletedest:true|false]

This call may be used to copy or synchronize the filesystem on the host or on a remote computer with the filesystem within libguestfs. This uses the rsync(1) program which uses a fast algorithm that avoids copying files unnecessarily.

This call only works if the network is enabled. See "set-network" or the --network option to various tools like guestfish(1).

Files are copied from the remote server and directory specified by "remote" to the destination directory "dest".

The format of the remote server string is defined by rsync(1). Note that there is no way to supply a password or passphrase so the target must be set up not to require one.

The optional arguments are the same as those of "rsync".

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "rsync". See also "feature-available".

rsync-out¶

 rsync-out src remote [archive:true|false] [deletedest:true|false]

This call may be used to copy or synchronize the filesystem within libguestfs with a filesystem on the host or on a remote computer. This uses the rsync(1) program which uses a fast algorithm that avoids copying files unnecessarily.

This call only works if the network is enabled. See "set-network" or the --network option to various tools like guestfish(1).

Files are copied from the source directory "src" to the remote server and directory specified by "remote".

The format of the remote server string is defined by rsync(1). Note that there is no way to supply a password or passphrase so the target must be set up not to require one.

The optional arguments are the same as those of "rsync".

Globbing does not happen on the "src" parameter. In programs which use the API directly you have to expand wildcards yourself (see "glob-expand"). In guestfish you can use the "glob" command (see "glob"), for example:

 ><fs> glob rsync-out /* rsync://remote/

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "rsync". See also "feature-available".

scrub-device¶

 scrub-device device

This command writes patterns over "device" to make data retrieval more difficult.

It is an interface to the scrub(1) program. See that manual page for more details.

This command depends on the feature "scrub". See also "feature-available".

scrub-file¶

 scrub-file file

This command writes patterns over a file to make data retrieval more difficult.

The file is removed after scrubbing.

It is an interface to the scrub(1) program. See that manual page for more details.

This command depends on the feature "scrub". See also "feature-available".

scrub-freespace¶

 scrub-freespace dir

This command creates the directory "dir" and then fills it with files until the filesystem is full, and scrubs the files as for "scrub-file", and deletes them. The intention is to scrub any free space on the partition containing "dir".

It is an interface to the scrub(1) program. See that manual page for more details.

This command depends on the feature "scrub". See also "feature-available".

selinux-relabel¶

 selinux-relabel specfile path [force:true|false]

SELinux relabel parts of the filesystem.

The "specfile" parameter controls the policy spec file used. You have to parse "/etc/selinux/config" to find the correct SELinux policy and then pass the spec file, usually: "/etc/selinux/" + selinuxtype + "/contexts/files/file_contexts".

The required "path" parameter is the top level directory where relabelling starts. Normally you should pass "path" as "/" to relabel the whole guest filesystem.

The optional "force" boolean controls whether the context is reset for customizable files, and also whether the user, role and range parts of the file context is changed.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "selinuxrelabel". See also "feature-available".

set-append¶

append¶

 set-append append

This function is used to add additional options to the libguestfs appliance kernel command line.

"LIBGUESTFS_APPEND" 環境変数を設定して上書きされなければ、デフォルトは "NULL" です。

"append" を "NULL" に設定することは、追加のオプションが渡され ない ことを意味します（libguestfs は常に自身のいくつかを追加します）。

set-attach-method¶

attach-method¶

 set-attach-method backend

Set the method that libguestfs uses to connect to the backend guestfsd daemon.

See "BACKEND" in guestfs(3).

This function is deprecated. In new code, use the "set-backend" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

set-autosync¶

autosync¶

 set-autosync true|false

If "autosync" is true, this enables autosync. Libguestfs will make a best effort attempt to make filesystems consistent and synchronized when the handle is closed (also if the program exits without closing handles).

デフォルトで有効です（libguestfs 1.5.24 以降、以前は デフォルトで無効でした）。

set-backend¶

backend¶

 set-backend backend

Set the method that libguestfs uses to connect to the backend guestfsd daemon.

This handle property was previously called the "attach method".

See "BACKEND" in guestfs(3).

set-backend-setting¶

 set-backend-setting name val

Append "name=value" to the backend settings string list. However if a string already exists matching "name" or beginning with "name=", then that setting is replaced.

See "BACKEND" in guestfs(3), "BACKEND SETTINGS" in guestfs(3).

set-backend-settings¶

 set-backend-settings 'settings ...'

Set a list of zero or more settings which are passed through to the current backend. Each setting is a string which is interpreted in a backend-specific way, or ignored if not understood by the backend.

The default value is an empty list, unless the environment variable "LIBGUESTFS_BACKEND_SETTINGS" was set when the handle was created. This environment variable contains a colon-separated list of settings.

This call replaces all backend settings. If you want to replace a single backend setting, see "set-backend-setting". If you want to clear a single backend setting, see "clear-backend-setting".

See "BACKEND" in guestfs(3), "BACKEND SETTINGS" in guestfs(3).

set-cachedir¶

cachedir¶

 set-cachedir cachedir

Set the directory used by the handle to store the appliance cache, when using a supermin appliance. The appliance is cached and shared between all handles which have the same effective user ID.

The environment variables "LIBGUESTFS_CACHEDIR" and "TMPDIR" control the default value: If "LIBGUESTFS_CACHEDIR" is set, then that is the default. Else if "TMPDIR" is set, then that is the default. Else /var/tmp is the default.

set-direct¶

direct¶

 set-direct true|false

If the direct appliance mode flag is enabled, then stdin and stdout are passed directly through to the appliance once it is launched.

One consequence of this is that log messages aren't caught by the library and handled by "set-log-message-callback", but go straight to stdout.

You probably don't want to use this unless you know what you are doing.

デフォルトは無効です。

This function is deprecated. In new code, use the "internal-get-console-socket" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

set-e2attrs¶

 set-e2attrs file attrs [clear:true|false]

This sets or clears the file attributes "attrs" associated with the inode file.

"attrs" is a string of characters representing file attributes. See "get-e2attrs" for a list of possible attributes. Not all attributes can be changed.

If optional boolean "clear" is not present or false, then the "attrs" listed are set in the inode.

If "clear" is true, then the "attrs" listed are cleared in the inode.

In both cases, other attributes not present in the "attrs" string are left unchanged.

These attributes are only present when the file is located on an ext2/3/4 filesystem. Using this call on other filesystem types will result in an error.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

set-e2generation¶

 set-e2generation file generation

これはファイルの ext2 ファイル世代を設定します。

"get-e2generation" を参照してください。

set-e2label¶

 set-e2label device label

This sets the ext2/3/4 filesystem label of the filesystem on "device" to "label". Filesystem labels are limited to 16 characters.

You can use either "tune2fs-l" or "get-e2label" to return the existing label on a filesystem.

This function is deprecated. In new code, use the "set-label" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

set-e2uuid¶

 set-e2uuid device uuid

This sets the ext2/3/4 filesystem UUID of the filesystem on "device" to "uuid". The format of the UUID and alternatives such as "clear", "random" and "time" are described in the tune2fs(8) manpage.

You can use "vfs-uuid" to return the existing UUID of a filesystem.

This function is deprecated. In new code, use the "set-uuid" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

set-hv¶

hv¶

 set-hv hv

Set the hypervisor binary that we will use. The hypervisor depends on the backend, but is usually the location of the qemu/KVM hypervisor. For the uml backend, it is the location of the "linux" or "vmlinux" binary.

The default is chosen when the library was compiled by the configure script.

You can also override this by setting the "LIBGUESTFS_HV" environment variable.

Note that you should call this function as early as possible after creating the handle. This is because some pre-launch operations depend on testing qemu features (by running "qemu -help"). If the qemu binary changes, we don't retest features, and so you might see inconsistent results. Using the environment variable "LIBGUESTFS_HV" is safest of all since that picks the qemu binary at the same time as the handle is created.

set-identifier¶

identifier¶

 set-identifier identifier

This is an informative string which the caller may optionally set in the handle. It is printed in various places, allowing the current handle to be identified in debugging output.

One important place is when tracing is enabled. If the identifier string is not an empty string, then trace messages change from this:

 libguestfs: trace: get_tmpdir
 libguestfs: trace: get_tmpdir = "/tmp"

to this:

 libguestfs: trace: ID: get_tmpdir
 libguestfs: trace: ID: get_tmpdir = "/tmp"

where "ID" is the identifier string set by this call.

The identifier must only contain alphanumeric ASCII characters, underscore and minus sign. The default is the empty string.

See also "set-program", "set-trace", "get-identifier".

set-label¶

 set-label mountable label

Set the filesystem label on "mountable" to "label".

いくつかのファイルシステム形式のみがラベルをサポートします。そして libguestfs はこれらのサブセットのみにおいてラベルの設定をサポートします。

ext2, ext3, ext4

Labels are limited to 16 bytes.

NTFS

Labels are limited to 128 unicode characters.

XFS

The label is limited to 12 bytes. The filesystem must not be mounted when trying to set the label.

btrfs

The label is limited to 255 bytes and some characters are not allowed. Setting the label on a btrfs subvolume will set the label on its parent filesystem. The filesystem must not be mounted when trying to set the label.

fat

The label is limited to 11 bytes.

swap

The label is limited to 16 bytes.

If there is no support for changing the label for the type of the specified filesystem, set_label will fail and set errno as ENOTSUP.

ファイルシステムのラベルを読み込むには "vfs-label" を呼び出します。

set-libvirt-requested-credential¶

 set-libvirt-requested-credential index cred

After requesting the "index"'th credential from the user, call this function to pass the answer back to libvirt.

See "LIBVIRT AUTHENTICATION" in guestfs(3) for documentation and example code.

set-libvirt-supported-credentials¶

 set-libvirt-supported-credentials 'creds ...'

Call this function before setting an event handler for "GUESTFS_EVENT_LIBVIRT_AUTH", to supply the list of credential types that the program knows how to process.

"creds" 一覧は文字列の空ではない一覧にする必要があります。利用可能な文字列は次のとおりです:

"username"

"authname"

"language"

"cnonce"

"passphrase"

"echoprompt"

"noechoprompt"

"realm"

"external"

これらのクレデンシャル種別の意味は libvirt ドキュメントを参照してください。

See "LIBVIRT AUTHENTICATION" in guestfs(3) for documentation and example code.

set-memsize¶

memsize¶

 set-memsize memsize

This sets the memory size in megabytes allocated to the hypervisor. This only has any effect if called before "launch".

ハンドルが設定される前に環境変数 "LIBGUESTFS_MEMSIZE" を設定することにより、これを変更できます。

libguestfs のアーキテクチャーの詳細は guestfs(3) を参照してください。

set-network¶

network¶

 set-network true|false

"network" が真ならば、libguestfs アプライアンスにおいてネットワークが有効になります。デフォルトは偽です。

This affects whether commands are able to access the network (see "RUNNING COMMANDS" in guestfs(3)).

"launch" を呼び出す前に、これを呼び出さなければいけません。そうしなければ効果がありません。

set-path¶

パス¶

 set-path searchpath

libguestfs がカーネルおよび initrd.img を検索するパスを設定します。

The default is "$libdir/guestfs" unless overridden by setting "LIBGUESTFS_PATH" environment variable.

"path" に "NULL" を設定することによりパスの初期値を復元します。

set-pgroup¶

pgroup¶

 set-pgroup true|false

"pgroup" が真ならば、子プロセスは自身のプロセスグループの中に置かれます。

The practical upshot of this is that signals like "SIGINT" (from users pressing "^C") won't be received by the child process.

The default for this flag is false, because usually you want "^C" to kill the subprocess. Guestfish sets this flag to true when used interactively, so that "^C" can cancel long-running commands gracefully (see "user-cancel").

set-program¶

program¶

 set-program program

Set the program name. This is an informative string which the main program may optionally set in the handle.

When the handle is created, the program name in the handle is set to the basename from "argv[0]". The program name can never be "NULL".

set-qemu¶

qemu¶

 set-qemu hv

Set the hypervisor binary (usually qemu) that we will use.

The default is chosen when the library was compiled by the configure script.

You can also override this by setting the "LIBGUESTFS_HV" environment variable.

Setting "hv" to "NULL" restores the default qemu binary.

Note that you should call this function as early as possible after creating the handle. This is because some pre-launch operations depend on testing qemu features (by running "qemu -help"). If the qemu binary changes, we don't retest features, and so you might see inconsistent results. Using the environment variable "LIBGUESTFS_HV" is safest of all since that picks the qemu binary at the same time as the handle is created.

This function is deprecated. In new code, use the "set-hv" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

set-recovery-proc¶

recovery-proc¶

 set-recovery-proc true|false

If this is called with the parameter "false" then "launch" does not create a recovery process. The purpose of the recovery process is to stop runaway hypervisor processes in the case where the main program aborts abruptly.

This only has any effect if called before "launch", and the default is true.

About the only time when you would want to disable this is if the main process will fork itself into the background ("daemonize" itself). In this case the recovery process thinks that the main program has disappeared and so kills the hypervisor, which is not very helpful.

set-selinux¶

selinux¶

 set-selinux true|false

This sets the selinux flag that is passed to the appliance at boot time. The default is "selinux=0" (disabled).

Note that if SELinux is enabled, it is always in Permissive mode ("enforcing=0").

libguestfs のアーキテクチャーの詳細は guestfs(3) を参照してください。

This function is deprecated. In new code, use the "selinux-relabel" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

set-smp¶

smp¶

 set-smp smp

アプライアンスに割り当てられる仮想 CPU 数を変更します。初期値は 1 です。これを増やすことにより性能を向上させられますが、ときどき効果がありません。

この関数は "launch" の前に呼び出す必要があります。

set-tmpdir¶

tmpdir¶

 set-tmpdir tmpdir

Set the directory used by the handle to store temporary files.

The environment variables "LIBGUESTFS_TMPDIR" and "TMPDIR" control the default value: If "LIBGUESTFS_TMPDIR" is set, then that is the default. Else if "TMPDIR" is set, then that is the default. Else /tmp is the default.

set-trace¶

trace¶

 set-trace true|false

If the command trace flag is set to 1, then libguestfs calls, parameters and return values are traced.

If you want to trace C API calls into libguestfs (and other libraries) then possibly a better way is to use the external ltrace(1) command.

Command traces are disabled unless the environment variable "LIBGUESTFS_TRACE" is defined and set to 1.

Trace messages are normally sent to "stderr", unless you register a callback to send them somewhere else (see "set-event-callback").

set-uuid¶

 set-uuid device uuid

Set the filesystem UUID on "device" to "uuid". If this fails and the errno is ENOTSUP, means that there is no support for changing the UUID for the type of the specified filesystem.

Only some filesystem types support setting UUIDs.

To read the UUID on a filesystem, call "vfs-uuid".

set-uuid-random¶

 set-uuid-random device

Set the filesystem UUID on "device" to a random UUID. If this fails and the errno is ENOTSUP, means that there is no support for changing the UUID for the type of the specified filesystem.

Only some filesystem types support setting UUIDs.

To read the UUID on a filesystem, call "vfs-uuid".

set-verbose¶

verbose¶

 set-verbose true|false

"verbose" が真ならば、メッセージの冗長化を有効にします。

Verbose messages are disabled unless the environment variable "LIBGUESTFS_DEBUG" is defined and set to 1.

Verbose messages are normally sent to "stderr", unless you register a callback to send them somewhere else (see "set-event-callback").

setcon¶

 setcon context

This sets the SELinux security context of the daemon to the string "context".

guestfs(3) における SELinux に関するドキュメントを参照してください。

This function is deprecated. In new code, use the "selinux-relabel" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

This command depends on the feature "selinux". See also "feature-available".

setxattr¶

 setxattr xattr val vallen path

This call sets the extended attribute named "xattr" of the file "path" to the value "val" (of length "vallen"). The value is arbitrary 8 bit data.

関連項目: "lsetxattr", attr(5)

This command depends on the feature "linuxxattrs". See also "feature-available".

sfdisk¶

 sfdisk device cyls heads sectors 'lines ...'

This is a direct interface to the sfdisk(8) program for creating partitions on block devices.

"device" should be a block device, for example /dev/sda.

"cyls", "heads" and "sectors" are the number of cylinders, heads and sectors on the device, which are passed directly to sfdisk as the -C, -H and -S parameters. If you pass 0 for any of these, then the corresponding parameter is omitted. Usually for ‘large’ disks, you can just pass 0 for these, but for small (floppy-sized) disks, sfdisk (or rather, the kernel) cannot work out the right geometry and you will need to tell it.

"lines" is a list of lines that we feed to "sfdisk". For more information refer to the sfdisk(8) manpage.

To create a single partition occupying the whole disk, you would pass "lines" as a single element list, when the single element being the string "," (comma).

関連項目: "sfdisk-l", "sfdisk-N", "part-init"

This function is deprecated. In new code, use the "part-add" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

sfdiskM¶

 sfdiskM device 'lines ...'

This is a simplified interface to the "sfdisk" command, where partition sizes are specified in megabytes only (rounded to the nearest cylinder) and you don't need to specify the cyls, heads and sectors parameters which were rarely if ever used anyway.

関連項目: "sfdisk", sfdisk(8) マニュアルページおよび "part-disk"

This function is deprecated. In new code, use the "part-add" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

sfdisk-N¶

 sfdisk-N device partnum cyls heads sectors line

This runs sfdisk(8) option to modify just the single partition "n" (note: "n" counts from 1).

For other parameters, see "sfdisk". You should usually pass 0 for the cyls/heads/sectors parameters.

関連項目: "part-add"

This function is deprecated. In new code, use the "part-add" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

sfdisk-disk-geometry¶

 sfdisk-disk-geometry device

This displays the disk geometry of "device" read from the partition table. Especially in the case where the underlying block device has been resized, this can be different from the kernel’s idea of the geometry (see "sfdisk-kernel-geometry").

The result is in human-readable format, and not designed to be parsed.

sfdisk-kernel-geometry¶

 sfdisk-kernel-geometry device

This displays the kernel’s idea of the geometry of "device".

The result is in human-readable format, and not designed to be parsed.

sfdisk-l¶

 sfdisk-l device

This displays the partition table on "device", in the human-readable output of the sfdisk(8) command. It is not intended to be parsed.

関連項目: "part-list"

This function is deprecated. In new code, use the "part-list" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

sh¶

 sh command

This call runs a command from the guest filesystem via the guest’s /bin/sh.

This is like "command", but passes the command to:

 /bin/sh -c "command"

Depending on the guest’s shell, this usually results in wildcards being expanded, shell expressions being interpolated and so on.

All the provisos about "command" apply to this call.

sh-lines¶

 sh-lines command

This is the same as "sh", but splits the result into a list of lines.

関連項目: "command-lines"

shutdown¶

 shutdown

これは "launch" の反対です。バックエンドプロセスの通常シャットダウンを実行します。自動同期フラグが設定されていると（これが標準です）、ディスクイメージが同期されます。

サブプロセスがエラーで終了すると、この関数はエラーを返します。これは（ディスクイメージが正しく書き出されていないことを意味する可能性があるので）無視すべき ではありません 。

It is safe to call this multiple times. Extra calls are ignored.

This call does not close or free up the handle. You still need to call "close" afterwards.

"close" will call this if you don't do it explicitly, but note that any errors are ignored in that case.

sleep¶

 sleep secs

"secs" 秒間スリープします。

stat¶

 stat path

与えられた "path" のファイル情報を返します。

This is the same as the stat(2) system call.

This function is deprecated. In new code, use the "statns" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

statns¶

 statns path

与えられた "path" のファイル情報を返します。

This is the same as the stat(2) system call.

statvfs¶

 statvfs path

Returns file system statistics for any mounted file system. "path" should be a file or directory in the mounted file system (typically it is the mount point itself, but it doesn't need to be).

This is the same as the statvfs(2) system call.

strings¶

 strings path

This runs the strings(1) command on a file and returns the list of printable strings found.

The "strings" command has, in the past, had problems with parsing untrusted files. These are mitigated in the current version of libguestfs, but see "CVE-2014-8484" in guestfs(3).

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

strings-e¶

 strings-e encoding path

This is like the "strings" command, but allows you to specify the encoding of strings that are looked for in the source file "path".

許可されるエンコードは次のとおりです:

s

Single 7-bit-byte characters like ASCII and the ASCII-compatible parts of ISO-8859-X (this is what "strings" uses).

S

単一の 8 ビットのバイト文字。

b

UTF-16BE や UCS-2BE でエンコードされたもののように 16 ビットのビッグエンディアン文字列。

l (小文字の L)

UTF-16LE や UCS-2LE のような 16 ビットのリトルエンディアン。これは Windows 仮想マシンにあるバイナリーを検査するために有用です。

B

UCS-4BE のような 32 ビットのビッグエンディアン。

L

UCS-4LE のような 32 ビットのリトルエンディアン。

返される文字列は UTF-8 に変換されます。

The "strings" command has, in the past, had problems with parsing untrusted files. These are mitigated in the current version of libguestfs, but see "CVE-2014-8484" in guestfs(3).

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

swapoff-device¶

 swapoff-device device

This command disables the libguestfs appliance swap device or partition named "device". See "swapon-device".

swapoff-file¶

 swapoff-file file

このコマンドは libguestfs アプライアンスの swap on ファイルを無効にします。

swapoff-label¶

 swapoff-label label

このコマンドは libguestfs アプライアンスの swap on ラベル付き swap パーティションを無効にします。

swapoff-uuid¶

 swapoff-uuid uuid

このコマンドは libguestfs アプライアンスの指定された UUID を持つ swap パーティションを無効にします。

This command depends on the feature "linuxfsuuid". See also "feature-available".

swapon-device¶

 swapon-device device

This command enables the libguestfs appliance to use the swap device or partition named "device". The increased memory is made available for all commands, for example those run using "command" or "sh".

Note that you should not swap to existing guest swap partitions unless you know what you are doing. They may contain hibernation information, or other information that the guest doesn't want you to trash. You also risk leaking information about the host to the guest this way. Instead, attach a new host device to the guest and swap on that.

swapon-file¶

 swapon-file file

This command enables swap to a file. See "swapon-device" for other notes.

swapon-label¶

 swapon-label label

This command enables swap to a labeled swap partition. See "swapon-device" for other notes.

swapon-uuid¶

 swapon-uuid uuid

This command enables swap to a swap partition with the given UUID. See "swapon-device" for other notes.

This command depends on the feature "linuxfsuuid". See also "feature-available".

sync¶

 sync

This syncs the disk, so that any writes are flushed through to the underlying disk image.

You should always call this if you have modified a disk image, before closing the handle.

syslinux¶

 syslinux device [directory:..]

Install the SYSLINUX bootloader on "device".

The device parameter must be either a whole disk formatted as a FAT filesystem, or a partition formatted as a FAT filesystem. In the latter case, the partition should be marked as "active" ("part-set-bootable") and a Master Boot Record must be installed (eg. using "pwrite-device") on the first sector of the whole disk. The SYSLINUX package comes with some suitable Master Boot Records. See the syslinux(1) man page for further information.

オプション引数は次のとおりです:

directory

Install SYSLINUX in the named subdirectory, instead of in the root directory of the FAT filesystem.

Additional configuration can be supplied to SYSLINUX by placing a file called syslinux.cfg on the FAT filesystem, either in the root directory, or under directory if that optional argument is being used. For further information about the contents of this file, see syslinux(1).

See also "extlinux".

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

This command depends on the feature "syslinux". See also "feature-available".

tail¶

 tail path

This command returns up to the last 10 lines of a file as a list of strings.

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

tail-n¶

 tail-n nrlines path

If the parameter "nrlines" is a positive number, this returns the last "nrlines" lines of the file "path".

If the parameter "nrlines" is a negative number, this returns lines from the file "path", starting with the "-nrlines"th line.

パラメーター "nrlines" が 0 ならば、空の一覧を返します。

Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. See "PROTOCOL LIMITS" in guestfs(3).

tar-in¶

tar-in-opts¶

 tar-in (tarfile|-) directory [compress:..] [xattrs:true|false] [selinux:true|false] [acls:true|false]

This command uploads and unpacks local file "tarfile" into directory.

The optional "compress" flag controls compression. If not given, then the input should be an uncompressed tar file. Otherwise one of the following strings may be given to select the compression type of the input file: "compress", "gzip", "bzip2", "xz", "lzop". (Note that not all builds of libguestfs will support all of these compression types).

The other optional arguments are:

"xattrs"

If set to true, extended attributes are restored from the tar file.

"selinux"

If set to true, SELinux contexts are restored from the tar file.

"acls"

If set to true, POSIX ACLs are restored from the tar file.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

tar-out¶

tar-out-opts¶

 tar-out directory (tarfile|-) [compress:..] [numericowner:true|false] [excludes:..] [xattrs:true|false] [selinux:true|false] [acls:true|false]

This command packs the contents of directory and downloads it to local file "tarfile".

The optional "compress" flag controls compression. If not given, then the output will be an uncompressed tar file. Otherwise one of the following strings may be given to select the compression type of the output file: "compress", "gzip", "bzip2", "xz", "lzop". (Note that not all builds of libguestfs will support all of these compression types).

The other optional arguments are:

"excludes"

A list of wildcards. Files are excluded if they match any of the wildcards.

"numericowner"

If set to true, the output tar file will contain UID/GID numbers instead of user/group names.

"xattrs"

If set to true, extended attributes are saved in the output tar.

"selinux"

If set to true, SELinux contexts are saved in the output tar.

"acls"

If set to true, POSIX ACLs are saved in the output tar.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

tgz-in¶

 tgz-in (tarball|-) directory

This command uploads and unpacks local file "tarball" (a gzip compressed tar file) into directory.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

This function is deprecated. In new code, use the "tar-in" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

tgz-out¶

 tgz-out directory (tarball|-)

This command packs the contents of directory and downloads it to local file "tarball".

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

This function is deprecated. In new code, use the "tar-out" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

touch¶

 touch path

Touch acts like the touch(1) command. It can be used to update the timestamps on a file, or, if the file does not exist, to create a new zero-length file.

This command only works on regular files, and will fail on other file types such as directories, symbolic links, block special etc.

truncate¶

 truncate path

This command truncates "path" to a zero-length file. The file must exist already.

truncate-size¶

 truncate-size path size

This command truncates "path" to size "size" bytes. The file must exist already.

If the current file size is less than "size" then the file is extended to the required size with zero bytes. This creates a sparse file (ie. disk blocks are not allocated for the file until you write to it). To create a non-sparse file of zeroes, use "fallocate64" instead.

tune2fs¶

 tune2fs device [force:true|false] [maxmountcount:N] [mountcount:N] [errorbehavior:..] [group:N] [intervalbetweenchecks:N] [reservedblockspercentage:N] [lastmounteddirectory:..] [reservedblockscount:N] [user:N]

This call allows you to adjust various filesystem parameters of an ext2/ext3/ext4 filesystem called "device".

オプションのパラメーターは次のとおりです:

"force"

Force tune2fs to complete the operation even in the face of errors. This is the same as the tune2fs "-f" option.

"maxmountcount"

Set the number of mounts after which the filesystem is checked by e2fsck(8). If this is 0 then the number of mounts is disregarded. This is the same as the tune2fs "-c" option.

"mountcount"

Set the number of times the filesystem has been mounted. This is the same as the tune2fs "-C" option.

"errorbehavior"

Change the behavior of the kernel code when errors are detected. Possible values currently are: "continue", "remount-ro", "panic". In practice these options don't really make any difference, particularly for write errors.

これは tune2fs "-e" オプションと同じです。

"group"

Set the group which can use reserved filesystem blocks. This is the same as the tune2fs "-g" option except that it can only be specified as a number.

"intervalbetweenchecks"

Adjust the maximal time between two filesystem checks (in seconds). If the option is passed as 0 then time-dependent checking is disabled.

これは tune2fs "-i" オプションと同じです。

"reservedblockspercentage"

Set the percentage of the filesystem which may only be allocated by privileged processes. This is the same as the tune2fs "-m" option.

"lastmounteddirectory"

最後にマウントされたディレクトリーを設定します。これは tune2fs "-M" オプションと同じです。

"reservedblockscount" Set the number of reserved filesystem blocks. This is the same as the tune2fs "-r" option.

"user"

Set the user who can use the reserved filesystem blocks. This is the same as the tune2fs "-u" option except that it can only be specified as a number.

To get the current values of filesystem parameters, see "tune2fs-l". For precise details of how tune2fs works, see the tune2fs(8) man page.

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

tune2fs-l¶

 tune2fs-l device

This returns the contents of the ext2, ext3 or ext4 filesystem superblock on "device".

It is the same as running "tune2fs -l device". See tune2fs(8) manpage for more details. The list of fields returned isn't clearly defined, and depends on both the version of "tune2fs" that libguestfs was built against, and the filesystem itself.

txz-in¶

 txz-in (tarball|-) directory

This command uploads and unpacks local file "tarball" (an xz compressed tar file) into directory.

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

This function is deprecated. In new code, use the "tar-in" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

This command depends on the feature "xz". See also "feature-available".

txz-out¶

 txz-out directory (tarball|-)

This command packs the contents of directory and downloads it to local file "tarball" (as an xz compressed tar archive).

標準入力/標準出力から読み込み/書き込みするには、ファイル名の代わりに "-" を使用します。

This function is deprecated. In new code, use the "tar-out" call instead.

Deprecated functions will not be removed from the API, but the fact that they are deprecated indicates that there are problems with correct use of these functions.

This command depends on the feature "xz". See also "feature-available".

umask¶

 umask mask

This function sets the mask used for creating new files and device nodes to "mask & 0777".

Typical umask values would be 022 which creates new files with permissions like "-rw-r--r--" or "-rwxr-xr-x", and 002 which creates new files with permissions like "-rw-rw-r--" or "-rwxrwxr-x".

The default umask is 022. This is important because it means that directories and device nodes will be created with 0644 or 0755 mode even if you specify 0777.

"get-umask", umask(2), "mknod", "mkdir" 参照。

この呼び出しは元の umask を返します。

umount¶

unmount¶

umount-opts¶

 umount pathordevice [force:true|false] [lazyunmount:true|false]

これは与えられたファイルシステムをアンマウントします。ファイルシステムは、そのマウントポイント (path)、またはファイルシステムを含むデバイスにより指定されます。

このコマンドは 1 つまたはそれ以上のオプション引数を持つ必要があります。 "オプション引数" を参照してください。

umount-all¶

unmount-all¶

 umount-all

これはマウントされたファイルシステムをすべてアンマウントします。

いくつかの内部マウントはこの呼び出しによりアンマウントされません。

umount-local¶

 umount-local [retry:true|false]

libguestfs がローカルマウントポイントにあるファイルシステムをエクスポートしているならば、これによりアンマウントされます。

完全なドキュメントは "MOUNT LOCAL" in guestfs(3) を参照してください。